Solve the problem.
-The opening in the top of a recycle bin is in the shape of a trapezoid. The measure of each of the lower angles is $80^{\circ}$. Find the measure of each of the top angles, which are also equal to each other.
A) $100^{\circ}$
B) $170^{\circ}$
C) $10^{\circ}$
D) $60^{\circ}$

Question

Quizplus · Accepted Answer

In a trapezoid, the sum of the measures of the angles on the same side is $180^{\circ}$. Since the lower angles are $80^{\circ}$ each, the top angles must also sum up to $180^{\circ}$ when combined with the lower angles. Therefore, each top angle is $180^{\circ} - 80^{\circ} = 100^{\circ}$.

Solve the Problem 80∘80^{\circ}80∘ Find the Measure of Each of the Top Angles

Solve the Problem $80^{\circ}$ Find the Measure of Each of the Top Angles