Chapter 5 Review

Front

In the figure, m∠4 = 144°. Find m∠1 and m∠2.

Back

m∠1 = 36°; m∠2 = 54°.

Front

What is the measure of each interior angle in a regular octagon?

Back

135 degrees.

Front

What is always the 1st statement in the reason column of a proof?

Back

Given.

Front

Find the distance.

Back

11.7.

Front

Find the value of x if x + 30° = 90°.

Back

x = 60°.

Front

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

Back

180 degrees.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

Front

What is the Pythagorean theorem?

Back

a² + b² = c², where c is the hypotenuse.

Front

What is the measure of each exterior angle in a regular pentagon?

Back

72 degrees.

Front

What is the relationship between complementary angles?

Back

They add up to 90 degrees.