Properties of Isosceles Trapezoids

Front

Interior angles of a trapezoid add up to _____?

Back

360 degrees.

Front

In a trapezoid, the non-parallel sides are called the ___________.

Back

Legs.

Front

If this trapezoid is isosceles, what is the measure of angle 1 if the other angle is 105 degrees?

Back

75 degrees.

Front

Find the measure of ∠1 if the other angle is 79°.

Back

101°.

Front

Find the measure of ∠K if the other angle is 114°.

Back

66°.

Front

What is an isosceles trapezoid?

Back

A trapezoid with a pair of equal-length non-parallel sides.

Front

What are the properties of the base angles in an isosceles trapezoid?

Back

The base angles are equal.

Front

How do you calculate the sum of the interior angles of a polygon?

Back

(n-2) × 180°, where n is the number of sides.

Front

What is the relationship between the legs of an isosceles trapezoid?

Back

The legs are congruent (equal in length).

Front

If one base of an isosceles trapezoid measures 10 cm and the other base measures 6 cm, what is the average length of the bases?

Back

8 cm.