Q. In a triangle, if the lengths of two sides are 7 cm and 10 cm, what could be the maximum length of the third side?
A.
16 cm
B.
17 cm
C.
18 cm
D.
19 cm
Show solution
Solution
According to the triangle inequality theorem, the sum of the lengths of any two sides must be greater than the length of the third side. Therefore, the maximum length of the third side can be 16 cm (7 + 10 - 1). Hence, the answer is 17 cm.
Correct Answer:
B
— 17 cm
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Q. In a triangle, if the lengths of two sides are 7 cm and 10 cm, what is the range of possible lengths for the third side?
A.
3 cm to 17 cm
B.
3 cm to 10 cm
C.
10 cm to 17 cm
D.
7 cm to 10 cm
Show solution
Solution
According to the triangle inequality theorem, the length of the third side must be less than the sum of the other two sides and greater than the difference of the two sides. Therefore, the range is 3 cm to 17 cm.
Correct Answer:
A
— 3 cm to 17 cm
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Q. In a triangle, if the lengths of two sides are 7 cm and 10 cm, which of the following could be the length of the third side?
A.
3 cm
B.
15 cm
C.
5 cm
D.
17 cm
Show solution
Solution
According to the triangle inequality theorem, the length of the third side must be less than the sum and greater than the difference of the other two sides. Therefore, the third side must be greater than 3 cm and less than 17 cm.
Correct Answer:
A
— 3 cm
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Q. In the context of geometry, which of the following statements about circles is true?
A.
A circle is defined by its radius alone.
B.
The diameter of a circle is twice the radius.
C.
All points on a circle are equidistant from the center.
D.
A circle can have more than one center.
Show solution
Solution
The diameter of a circle is indeed twice the radius, making this statement true.
Correct Answer:
B
— The diameter of a circle is twice the radius.
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Q. In the context of geometry, which of the following statements about polygons is true?
A.
All polygons are convex.
B.
A polygon can have an infinite number of sides.
C.
The sum of the interior angles of a polygon increases with the number of sides.
D.
All polygons are regular.
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Solution
The sum of the interior angles of a polygon is given by the formula (n-2) * 180 degrees, where n is the number of sides. Therefore, as the number of sides increases, the sum of the interior angles also increases.
Correct Answer:
C
— The sum of the interior angles of a polygon increases with the number of sides.
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Q. In triangle ABC, if angle A is 30 degrees and angle B is 60 degrees, what is the measure of angle C?
A.
30 degrees
B.
60 degrees
C.
90 degrees
D.
120 degrees
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Solution
Using the property that the sum of angles in a triangle is 180 degrees, angle C can be calculated as 180 - (30 + 60) = 90 degrees.
Correct Answer:
C
— 90 degrees
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Q. In triangle DEF, if angle D is 45 degrees and angle E is 45 degrees, what is the type of triangle?
A.
Scalene
B.
Isosceles
C.
Equilateral
D.
Right
Show solution
Solution
Since two angles are equal (45 degrees), triangle DEF is an isosceles triangle.
Correct Answer:
B
— Isosceles
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Q. In triangle DEF, if angle D is 45 degrees and angle E is 45 degrees, what type of triangle is DEF?
A.
Scalene
B.
Isosceles
C.
Equilateral
D.
Right-angled
Show solution
Solution
Since two angles are equal (45 degrees each), triangle DEF is an isosceles triangle.
Correct Answer:
B
— Isosceles
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Q. In triangle DEF, if angle D is 90 degrees and the lengths of the legs are 6 cm and 8 cm, what is the length of the hypotenuse?
A.
10 cm
B.
12 cm
C.
14 cm
D.
16 cm
Show solution
Solution
Using the Pythagorean theorem, hypotenuse = √(6² + 8²) = √(36 + 64) = √100 = 10 cm.
Correct Answer:
A
— 10 cm
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Q. In triangle XYZ, if side XY = 8 cm, side YZ = 6 cm, and side XZ = 10 cm, which of the following is true?
A.
It is a right triangle.
B.
It is an obtuse triangle.
C.
It is an acute triangle.
D.
It cannot be classified.
Show solution
Solution
Using the Pythagorean theorem, since 10^2 = 8^2 + 6^2 (100 = 64 + 36), triangle XYZ is a right triangle.
Correct Answer:
A
— It is a right triangle.
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Q. In triangle XYZ, if side XY is 8 cm, side YZ is 6 cm, and angle X is 45 degrees, which method can be used to find the length of side XZ?
A.
Pythagorean theorem
B.
Sine rule
C.
Cosine rule
D.
Area formula
Show solution
Solution
To find the length of side XZ when two sides and the included angle are known, the Cosine rule is applicable.
Correct Answer:
C
— Cosine rule
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Q. In triangle XYZ, if side XY is 8 cm, side YZ is 6 cm, and side XZ is 10 cm, which of the following is true?
A.
It is a right triangle.
B.
It is an isosceles triangle.
C.
It is an equilateral triangle.
D.
It is a scalene triangle.
Show solution
Solution
Since all sides are of different lengths, triangle XYZ is a scalene triangle.
Correct Answer:
D
— It is a scalene triangle.
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Q. In triangle XYZ, if XY = 5 cm, YZ = 12 cm, and XZ = 13 cm, what type of triangle is it?
A.
Acute
B.
Obtuse
C.
Right
D.
Equilateral
Show solution
Solution
Using the Pythagorean theorem, since 5^2 + 12^2 = 25 + 144 = 169 = 13^2, triangle XYZ is a right triangle.
Correct Answer:
C
— Right
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Q. In triangle XYZ, if XY = 8 cm, YZ = 6 cm, and XZ = 10 cm, which of the following is true?
A.
It is an equilateral triangle.
B.
It is an isosceles triangle.
C.
It is a scalene triangle.
D.
It is a right triangle.
Show solution
Solution
Since all sides are of different lengths, triangle XYZ is a scalene triangle.
Correct Answer:
C
— It is a scalene triangle.
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Q. In triangle XYZ, if XY = 8 cm, YZ = 6 cm, and XZ = 10 cm, which side is the longest?
A.
XY
B.
YZ
C.
XZ
D.
All sides are equal
Show solution
Solution
The longest side in triangle XYZ is XZ, which measures 10 cm.
Correct Answer:
C
— XZ
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Q. The area of a parallelogram is 120 square meters, and its base is 15 meters. What is the height?
A.
8 m
B.
10 m
C.
12 m
D.
15 m
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Solution
Area = base × height. Thus, 120 = 15 × height, giving height = 120/15 = 8 m.
Correct Answer:
B
— 10 m
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Q. The area of a parallelogram is 120 square units, and its base is 15 units. What is the height?
A.
8 units
B.
10 units
C.
12 units
D.
15 units
Show solution
Solution
Area = base × height. Thus, 120 = 15 × height, giving height = 120/15 = 8 units.
Correct Answer:
B
— 10 units
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Q. The area of a rhombus is 48 square cm and one diagonal is 8 cm. What is the length of the other diagonal?
A.
12 cm
B.
10 cm
C.
8 cm
D.
6 cm
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Solution
Area = (1/2) × d1 × d2. Thus, 48 = (1/2) × 8 × d2, giving d2 = 12 cm.
Correct Answer:
A
— 12 cm
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Q. The area of a rhombus is 60 square cm and one diagonal is 10 cm. What is the length of the other diagonal?
A.
12 cm
B.
15 cm
C.
10 cm
D.
8 cm
Show solution
Solution
Area = (1/2) × d1 × d2. Thus, 60 = (1/2) × 10 × d2, giving d2 = 12 cm.
Correct Answer:
B
— 15 cm
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Q. The area of a rhombus is 60 square cm. If one diagonal is 10 cm, what is the length of the other diagonal?
A.
12 cm
B.
15 cm
C.
10 cm
D.
8 cm
Show solution
Solution
Area = (1/2) × d1 × d2. Thus, 60 = (1/2) × 10 × d2, giving d2 = 60/(5) = 12 cm.
Correct Answer:
B
— 15 cm
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Q. The area of a sector of a circle is 30 cm² and the radius is 5 cm. What is the angle of the sector in degrees?
A.
60 degrees
B.
72 degrees
C.
90 degrees
D.
120 degrees
Show solution
Solution
Area of sector = (θ/360) × πr². Thus, 30 = (θ/360) × 3.14 × 25. Solving gives θ = (30 × 360) / (3.14 × 25) ≈ 72 degrees.
Correct Answer:
B
— 72 degrees
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Q. What is the area of a circle with a radius of 7 cm?
A.
154 cm²
B.
49 cm²
C.
28 cm²
D.
100 cm²
Show solution
Solution
The area of a circle is given by A = πr². Thus, A = π(7)² = 49π ≈ 154 cm².
Correct Answer:
A
— 154 cm²
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Q. What is the area of a quadrilateral with vertices at (0,0), (4,0), (4,3), and (0,3)?
A.
12 square units
B.
10 square units
C.
15 square units
D.
20 square units
Show solution
Solution
The area can be calculated as length × width = 4 × 3 = 12 square units.
Correct Answer:
A
— 12 square units
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Q. What is the area of a regular pentagon with a side length of 6 units? (2023)
A.
15√5
B.
30
C.
18√5
D.
36
Show solution
Solution
The area of a regular pentagon can be calculated using the formula (1/4)√(5(5 + 2√5)) * s². For s = 6, the area is approximately 15√5.
Correct Answer:
A
— 15√5
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Q. What is the area of a rhombus with diagonals measuring 10 cm and 24 cm?
A.
120 cm²
B.
60 cm²
C.
80 cm²
D.
100 cm²
Show solution
Solution
Area of a rhombus = (1/2) × d1 × d2 = (1/2) × 10 × 24 = 120 cm².
Correct Answer:
A
— 120 cm²
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Q. What is the area of a triangle formed by the points (0, 0), (4, 0), and (0, 3)?
Show solution
Solution
The area of a triangle is given by (1/2) * base * height. Here, base = 4 and height = 3, so area = (1/2) * 4 * 3 = 6.
Correct Answer:
A
— 6
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Q. What is the area of a triangle with a base of 10 cm and a height of 5 cm?
A.
25 cm²
B.
50 cm²
C.
15 cm²
D.
30 cm²
Show solution
Solution
The area of a triangle is given by the formula (1/2) * base * height. Thus, Area = (1/2) * 10 * 5 = 25 cm².
Correct Answer:
A
— 25 cm²
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Q. What is the distance between the points (1, 1) and (4, 5)?
Show solution
Solution
Using the distance formula, d = √[(x2 - x1)² + (y2 - y1)²] = √[(4 - 1)² + (5 - 1)²] = √[3² + 4²] = √[9 + 16] = √25 = 5.
Correct Answer:
C
— 5
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Q. What is the distance between the points P(3, 4) and Q(7, 1) in the coordinate plane?
Show solution
Solution
Using the distance formula d = √((x2 - x1)² + (y2 - y1)²), we find d = √((7 - 3)² + (1 - 4)²) = √(16 + 9) = √25 = 5.
Correct Answer:
B
— 6
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Q. What is the distance between the points P(3, 4) and Q(7, 1)?
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Solution
Using the distance formula, d = √[(7-3)² + (1-4)²] = √[16 + 9] = √25 = 5.
Correct Answer:
A
— 5
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