Question

which pairs of figures below are congruent?
(there are four groups of figures, each with a congruent? question and yes/no radio buttons. the first group has two circles, the second has two irregular shapes, the third has two triangles, the fourth has two rectangles of different sizes.)

Explanation:

Step1: Analyze the first pair (circles)

Two circles on the grid. Congruent figures have same shape and size. These circles look identical in size and shape. So answer "Yes".

Step2: Analyze the second pair (complex shapes)

The top shape has a notch, the bottom one is different. Their shapes don't match. So answer "No".

Step3: Analyze the third pair (triangles)

Top triangle is smaller, bottom is larger. Different sizes, so not congruent. Answer "No".

Step4: Analyze the fourth pair (rectangles)

Top rectangle is smaller, bottom is larger. Different sizes, so not congruent. Answer "No".

Answer:

First pair (circles): Yes
Second pair (complex shapes): No
Third pair (triangles): No
Fourth pair (rectangles): No