Optical Illusions With Geometry - Math Worksheet Page 2

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Optical Illusions with Geometry

Look at these two figures.

Are the two vertical lines the

same length?

Use a ruler to verify your prediction.

Were you correct?

Most students will predict the vertical

lines are not the same length, but they are the same.

This is an optical illusion. Optical illusions can visually be seen in different ways.

They sometimes play tricks on your eyes and make you see things that are false.

Look at this 2-D hexagon.

Can you draw a 3-D cube?

Hint: you only need to draw

three lines.

Do you see the cube sitting on a face or on a point?

Answers may vary. Check students’ work.

Do you see a cube missing any faces?

Answers may vary. Check students’ work.

Discuss Your Thinking Look at the optical illusions below and discuss what you

see with a classmate.

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