Results for: Add-up-to

What do angles add up to in a heptagon?

The polygon angle sum theorem says that the angles of a polygon with n sides is equal to (n-2)180. A heptagon has 7 sides, so the equation would be (7-2)180, or 5(180), or 900 (MORE)

What is the answer to 20c plus 5 equals 5c plus 65?

20c + 5 = 5c + 65 Divide through by 5: 4c + 1 = c + 13 Subtract c from both sides: 3c + 1 = 13 Subtract 1 from both sides: 3c = 12 Divide both sides by 3: c = 4
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