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Question 10 • Mathematics II

To build the roof for a paper house, a rectangular paper is cut to form a trapezoid. Which diagram shows the correct cuts?

Answer

Image with description A rectangle is shown. Lines are drawn from the bottom left corner and the bottom right corner to the midpoint of the top side.

Image with description A rectangle is shown. 2 parallel lines are drawn diagonally across the rectangle.

Image with description A rectangle is shown. Lines are drawn from the midpoints of each side to the midpoint of the top side.

Image with description A rectangle is shown. Lines are drawn from the bottom left corner and the bottom right corner to points about one-quarter of the way across the top side.

Explanation

Cutting from each bottom corner to a point on the top edge leaves a middle shape with a shorter top side and the full bottom side. Those two sides are parallel, so the middle shape is a trapezoid. Choice C shows the cuts placed apart from the top midpoint, leaving that trapezoid between them.

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