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In triangle DEF, if angle D is 45 degrees and angle E is 45 degrees, what type o
In triangle DEF, if angle D is 45 degrees and angle E is 45 degrees, what type of triangle is DEF?
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Q1
In triangle DEF, if angle D is 45 degrees and angle E is 45 degrees, what type of triangle is DEF?
Scalene
Isosceles
Equilateral
Right-angled
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Since two angles are equal (45 degrees each), triangle DEF is an isosceles triangle.
Questions & Step-by-step Solutions
1 item
Q
Q: In triangle DEF, if angle D is 45 degrees and angle E is 45 degrees, what type of triangle is DEF?
Solution:
Since two angles are equal (45 degrees each), triangle DEF is an isosceles triangle.
Steps: 4
Show Steps
Step 1: Identify the angles given in triangle DEF. We have angle D = 45 degrees and angle E = 45 degrees.
Step 2: Recall the definition of an isosceles triangle. An isosceles triangle has at least two equal angles.
Step 3: Since angle D and angle E are both 45 degrees, they are equal.
Step 4: Conclude that triangle DEF has at least two equal angles, which means it is an isosceles triangle.
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