Properties of Trapezoids and Isosceles Trapezoids A

Front

What is a trapezoid?

Back

A trapezoid is a four-sided figure (quadrilateral) with at least one pair of parallel sides.

Front

What are the properties of the legs of an isosceles trapezoid?

Back

The legs of an isosceles trapezoid are congruent, meaning they have the same length.

Front

What are the base angles of an isosceles trapezoid?

Back

The base angles of an isosceles trapezoid are congruent, meaning they are equal in measure.

Front

Are the diagonals of an isosceles trapezoid congruent?

Back

Yes, the diagonals of an isosceles trapezoid are congruent.

Front

How do you find the missing angle in a trapezoid?

Back

To find the missing angle in a trapezoid, use the property that the sum of the interior angles of any quadrilateral is 360 degrees.

Front

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

Back

The sum of the interior angles of a trapezoid is 360 degrees.

Front

What is the relationship between the angles of a trapezoid?

Back

In a trapezoid, the angles on the same side of a leg are supplementary, meaning they add up to 180 degrees.

Front

If one angle of a trapezoid is 65 degrees, what is the measure of the angle adjacent to it if they are on the same side?

Back

The adjacent angle would be 115 degrees, since they are supplementary.

Front

What is the definition of congruent angles?

Back

Congruent angles are angles that have the same measure.

Front

What is the formula for finding the area of a trapezoid?

Back

The area of a trapezoid can be found using the formula: Area = (1/2) * (Base1 + Base2) * Height.