The sum of the exterior angles of any polygon is always 360 degrees.

The surface area of a cube is given by the formula SA = 6a². Setting 6a² = 216, we find a² = 36, thus a = 6 meters.

The surface area of a cylinder is given by SA = 2πr(h + r). Setting 150π = 2πr(10 + r), we find r = 5 cm.

The surface area of a cylinder is given by SA = 2πr(h + r). Setting 150π = 2πr(5 + r), we find r = 4 cm.

Let the angles be x and x - 10. Then, x + (x - 10) = 90. Solving gives x = 50 degrees and the other angle is 40 degrees.

Let the two angles be x and x - 10. Since they are complementary, x + (x - 10) = 90. Solving gives x = 50 degrees, and the other angle is 40 degrees.

Let the smaller angle be x. Then the larger angle is x + 10. Since they are complementary, x + (x + 10) = 90. Solving gives x = 40 degrees, so the angles are 40 and 50 degrees.

Let the smaller angle be x. Then the larger angle is 2x. The equation x + 2x = 90 gives x = 30 degrees and 2x = 60 degrees.

Complementary angles add up to 90 degrees. Therefore, the other angle is 90 - 25 = 65 degrees.

Complementary angles are defined as two angles whose measures add up to 90 degrees.

Complementary angles sum to 90 degrees, so the maximum measure of either angle can be 90 degrees.

Complementary angles sum to 90 degrees. Therefore, if one angle is 30 degrees, the other must be 90 - 30 = 60 degrees.

Angles measuring less than 90 degrees are classified as acute angles.

If two angles are equal and one measures 40 degrees, the other must also measure 40 degrees.

Angles that measure less than 90 degrees are classified as acute angles. Since both angles are equal to 45 degrees, they are acute.

If two angles are equal and their sum is 180 degrees, they are straight angles, each measuring 90 degrees.

Complementary angles add up to 90 degrees, so the maximum measure of either angle can be 90 degrees.

Vertically opposite angles are formed when two lines intersect and are always equal.

Vertically opposite angles are formed when two lines intersect and are always equal.

Let the smaller angle be x. Then the larger angle is 3x. Since they are supplementary, x + 3x = 180. Solving gives x = 45 degrees.

The centers of two intersecting circles are equidistant from the points of intersection.

Circles that intersect at two points are said to be secant to each other.

The centers of the circles are equidistant from the intersection points, making option 0 true.

When two parallel lines are cut by a transversal, alternate interior angles and corresponding angles are equal, while consecutive interior angles are supplementary. Therefore, the correct answer is 'All of the above'.

Both alternate interior angles and corresponding angles are equal when two parallel lines are cut by a transversal.

When two parallel lines are cut by a transversal, alternate interior angles are equal.

The sum of the exterior angles of any polygon is 360 degrees. If each exterior angle is 30 degrees, then the number of sides is 360 / 30 = 12.

In a regular polygon, each interior angle can be calculated using the formula (n-2) * 180/n. Setting this equal to 120 degrees and solving for n gives n = 6, indicating a hexagon.

The sum of the exterior angles of any polygon is 360 degrees. Therefore, the number of sides n = 360 / 30 = 12.

The sum of the exterior angles of any polygon is 360 degrees. If each exterior angle is 45 degrees, the number of sides is 360 / 45 = 8.