Isosceles Trapezoid Properties and Angles

The video tutorial covers the properties of isosceles trapezoids, including congruent legs, parallel bases, and congruent base angles. It explains the properties of diagonals and provides examples of calculating angles and solving for variables using these properties. The video concludes with a preview of the next topic on trapezoid altitudes.

What is the defining feature of the legs in an isosceles trapezoid?

• They are congruent.

• They are perpendicular.

• They are parallel.

• They are unequal.

In an isosceles trapezoid, what is true about the bases?

• They are unequal.

• They are parallel.

• They are perpendicular.

• They are congruent.

If one base angle in an isosceles trapezoid is 100°, what is the measure of the other base angle on the same base?

• 110°

• 90°

• 100°

• 80°

What is the sum of the base angles in an isosceles trapezoid?

• 360°

• 270°

• 180°

• 90°

What is true about the diagonals in an isosceles trapezoid?

• They are perpendicular.

• They are unequal.

• They are congruent.

• They are parallel.

In an isosceles trapezoid, if segment AC is congruent to segment BD, what does this imply?

• The trapezoid is not isosceles.

• The bases are congruent.

• The legs are parallel.

• The diagonals are congruent.

If angle U in an isosceles trapezoid is 95°, what is the measure of angle T?

• 90°

• 95°

• 100°

• 85°

In an isosceles trapezoid, if the measure of angle U is 95°, what is the measure of angle W?

• 90°

• 85°

• 95°

• 100°

What is the sum of the interior angles in any quadrilateral?

• 180°

• 270°

• 360°

• 450°

If 12x + 96 = 180, what is the value of x?

• 6

• 7

• 8

• 9