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7. Match the formula and solve the problems based on interior and exterior angle property

Match the formula:

1. Sum of each interior angle of a regular polygon is

Answer variants:

(n-2)×180°/n

360°

(n-2)×180°

360°/n

2. Sum of each interior angle of a regular decagon is

i

\(°\).

3. The number of diagonals in a convex heptagon is .

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