with Diego Forlan
Jan 05, 2016
with Diego Forlan
F = 6
©
Equation
F + C – E =
©
Equation
6 + 8 – 12 = 2
©
21286
= ? E CF
©
and a football
©
= ? E CF
Fill in the table©
6
= ? E CF
©
How many Corners?
©
C = ©
C = 8 ©
6
= ? E CF
©
86
= ? E CF
©
How many Edges?
©
E =
©
E = 12
©
86
= ? E CF
©
1286
= ? E CF
©
Equation
6 + 8 – 12 =
©
A Pyramid
©
F = ©
F = 4 ©
4
21286
= ? E CF
©
C = ©
C = 4 ©
44
21286
= ? E CF
©
E = ©
E = 6 ©
644
21286
= ? E CF
©
Equation
F + C – E =
©
Equation
4 + 4 – 6 =
©
Equation
4 + 4 – 6 = 2
©
644
21286
= ? E CF
©
2644
21286
= ? E CF
©
For homework see whether you can do the same calculation
for
©
an icosahedron
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Project Algebra and Geometry Algebra and Geometry are easy. Here is an equation. Fill in the empty squares and solve the equation. F stands for the number of faces, C for the number of corners and E for the number of edges for a shape. For a cube F = 6. Could anything be easier? When you have worked out F, C and E for a shape you can solve the equation.
F + C – E = ?
Faces
Corners
Edges
= ?
Equation
F
C
E
Cube
Pyramid
Icosahedron
Football
What do you notice about the results?
Let’s count the Faces on a cube
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Use the letter F for the number of Faces
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How many Faces?
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F =
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Learn Algebra
How many Corners?
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4 on top
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4 on the bottom©
1
©
1 2
©
1 2
3
©
1 24
3
©
1 24
3
5
©
1 24
3
5
6 ©