Geometry Semester Exam Review

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is always 180 degrees.

Front

If m∠A + m∠B + m∠C = 180°, what can you conclude about the angles in a triangle?

Back

The angles in a triangle are supplementary, meaning their measures add up to 180 degrees.

Front

What is the formula to find the scale factor between two similar figures?

Back

The scale factor is found by dividing the length of a side of one figure by the corresponding side of the other figure.

Front

If two angles are complementary, what is the sum of their measures?

Back

The sum of the measures of two complementary angles is 90 degrees.

Front

What is the relationship between the angles in a linear pair?

Back

The angles in a linear pair are supplementary, meaning they add up to 180 degrees.

Front

How do you find the measure of an unknown angle if you know the measures of the other angles in a triangle?

Back

Subtract the sum of the known angles from 180 degrees to find the measure of the unknown angle.

Front

What is the definition of a scale factor in geometry?

Back

A scale factor is a number that scales, or multiplies, some quantity.

Front

What is the measure of an exterior angle of a triangle?

Back

The measure of an exterior angle is equal to the sum of the measures of the two non-adjacent interior angles.

Front

If m∠A = 125°, what is the measure of the corresponding interior angle in a triangle?

Back

The corresponding interior angle is 55°.

Front

What is the formula for the area of a triangle?

Back

The area of a triangle is given by the formula: Area = 1/2 * base * height.