Optical Illusions (Geometric)

What is an optical illusion?

• A really cool drawing.

• A picture of something you can't explain.

• Something that tricks your mind and your eyes into believing something is happening when it really is not.

• It is something similar to a landscape.

What is a geometric shape?

• A closed figure with a name.

• A closed figure without a name.

What is an abstract shape?

• A closed figure with a name.

• A closed figure without a name.

Choose the abstract shape below.

• 
• 
• 

Choose the geometric shapes below.

• 
• 
• 

What is radial symmetry?

• When the same parts of a design are arranged in a circular pattern.

• When shapes are scattered all over a page.

• When you draw a line down the middle of a design and one side looks completely different than the other.

Choose the picture below that depicts radial symmetry.

• 
• 
• 

Parallel lines are lines that never touch or ______________.

• spin

• turn

• intersect or touch

Choose the pictures that show parallel lines.

• 
• 
• 
• 

Always hold your ruler steady with your hand in the shape of an...

• L

• M

• I

• O