Understanding Trapezoids

What distinguishes a trapezoid from other quadrilaterals?

• It has no parallel sides.

• All sides are of equal length.

• It has one pair of parallel sides.

• It has two pairs of parallel sides.

In a trapezoid, what are the non-parallel sides called?

• Bases

• Legs

• Diagonals

• Angles

Which angles in a trapezoid are referred to as base angles?

• Angles that are equal in measure

• Angles that are adjacent to each other

• Angles that share a common base

• Angles that are opposite each other

What is a midsegment in a trapezoid?

• A line that connects the midpoints of the legs

• A line that divides the trapezoid into two equal areas

• A line that is perpendicular to the bases

• A line that is equal in length to the bases

How do you calculate the length of the midsegment in a trapezoid?

• Add the lengths of the legs and divide by two

• Multiply the lengths of the bases

• Subtract the length of one base from the other

• Add the lengths of the bases and divide by two

If the midsegment of a trapezoid is 9 units long, and one base is 5 units, what is the length of the other base?

• 13 units

• 14 units

• 4 units

• 18 units

What is a defining feature of an isosceles trapezoid?

• The bases are congruent.

• The legs are congruent.

• The diagonals are perpendicular.

• The angles are all right angles.

In an isosceles trapezoid, what is true about the common base angles?

• They are congruent.

• They are supplementary.

• They are complementary.

• They are unequal.

What is the relationship between the uncommon base angles in an isosceles trapezoid?

• They are equal.

• They are complementary.

• They are supplementary.

• They are congruent.

If one base angle in an isosceles trapezoid is 65°, what is the measure of the other base angle on the same parallel line?

• 115°

• 65°

• 45°

• 90°