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Let's see if you have an eye for spotting slight differences in a set of images.

Below you will see three images, all very similar to each other in some way; but one of the images in the set is not the same as the other two. See if you can determine which of the images below does not belong in the set.

Same or Different?

Choose the image that does not "belong" in the set.

Blue water drops.


Green water drops


Red water drops.


This image matches another one in the set.

This image matches another one in the set.

This image might look similar to the other two in shape, but the size is slightly smaller.

Choose the image that does not match the other two.

Green feet.


Blue feet.


Red feet.


This image matches another one in the set.

This image might look similar to the other two in shape, but the size is slightly smaller.

This image matches another one in the set.

Choose the image that does not match the other two.

Window with blue glass.


Window with pink glass.


Slightly larger window with blue glass.


This image matches another one in the set.

This image matches another one in the set.

This image might look similar to the other two in shape, but the size is slightly larger.

You got # out of # correct. Click the Retry button for another attempt.

You got a perfect score. Great job!

You may have noticed that although some of the images changed positions or colors, they were still identical in every other way to another image. When an object is identical in size and shape to another object, we say the two are congruent to each other.

Question

What do color and position of shapes have to do with congruence?

As long as two objects are identical in size and shape, the color and position of the shapes are irrelevant. The same goes for all objects whether they are angles or segments.