Lets count the Faces on a cube ©. Use the letter F for the number of Faces ©

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Presentation transcript:

Lets count the Faces on a cube ©

Use the letter F for the number of Faces ©

How many Faces? ©

F = ©

F = 6 ©

Fill in the table ©

©

How many Corners? ©

C = ©

C = 8 ©

©

©

How many Edges? ©

E = ©

E = 12 ©

©

©

Equation F + C – E = ©

Equation – 12 = ©

Equation – 12 = 2 ©

©

A Pyramid ©

F = ©

F = 4 ©

©

C = ©

C = 4 ©

©

E = ©

E = 6 ©

©

Equation F + C – E = ©

Equation – 6 = ©

Equation – 6 = 2 ©

©

©

For homework see whether you can do the same calculation for ©

an icosahedron ©

and a football ©

How many Corners? ©

4 on top ©

4 on the bottom ©

1 ©

1 2 ©

1 2 3 ©

©

©

©