Geometry Midterm Review 2

Front

If m∠AOB = 32° and m∠BOC = 17°, find m∠AOC.

Back

m∠AOC = m∠AOB + m∠BOC = 32° + 17° = 49°.

Front

What is the measure of angle b if it is complementary to angle a, where m∠a = 54°?

Back

m∠b = 90° - m∠a = 90° - 54° = 36°.

Front

Find the length of segment LK if L(1, 2) and K(4, 2).

Back

LK = |x2 - x1| = |4 - 1| = 3.

Front

Name the postulate that makes triangles congruent if two angles and a non-included side are known.

Back

AAS (Angle-Angle-Side) postulate.

Front

If two polygons are similar, what is the relationship between their corresponding sides?

Back

The ratios of their corresponding sides are equal.

Front

What is the scale factor of two similar triangles if the lengths of corresponding sides are 3 and 9?

Back

Scale factor = 3/9 = 1/3.

Front

Define complementary angles.

Back

Two angles are complementary if the sum of their measures is 90°.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

Front

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

Back

The sum of their measures is 180°.

Front

What does it mean for two triangles to be congruent?

Back

Two triangles are congruent if all their corresponding sides and angles are equal.