Section 1.1Section 1.1Optical Optical IllusionsIllusions

Optical IllusionsOptical Illusions

Which center circle is Which center circle is largerlarger??

What do you notice about What do you notice about the the pink blockspink blocks??

WhereWhere is the sphere is the sphere located?located?

Which “line” is Which “line” is longer,longer, A or A or B?B?

A B

Are the two Are the two center linescenter lines straightstraight or or curvedcurved??

Are the lines Are the lines straightstraight??

What do you see?What do you see?

Is the blue side in the Is the blue side in the frontfront or or backback of the cube? of the cube?

What do you see?What do you see?

What do you see?What do you see?

What do you see?What do you see?

What do you see?What do you see?

What do you see?What do you see?

What do you see?What do you see?

EXPLORATIONEXPLORATION1)1) Mark Point Mark Point PP in your notebook in your notebook

2)2) Mark a point Mark a point 4 cm4 cm from from PP. Label it . Label it HH..

3)3) Mark another point Mark another point 4 cm4 cm from from PP. Label it . Label it KK..

4)4) Mark three new points Mark three new points 4 cm4 cm from from PP. Label . Label them them R, G, ER, G, E..

5)5) How many points exist that are How many points exist that are 4 cm4 cm from from PP??

6)6) If you were to connect all the points, what If you were to connect all the points, what type of geometric figure is formed around type of geometric figure is formed around PP??

PRACTICE PROBLEMSPRACTICE PROBLEMS

Yes we are doing work on the first Yes we are doing work on the first day!day!

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