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il63 [147K]
3 years ago
7

Select the choice which shows all of the diagonals in this polygon and tells how many there are.

Mathematics
2 answers:
Leona [35]3 years ago
6 0

Answer:

Answer C

Step-by-step explanation:

If the polygon has n sides, then the number of diagonals the polygon has is

(n - 3)*n/2

So for a seven sided figure the number of diagonals would be

(7 - 3)(7)/2 = 4*7/2 = 28/2 = 14

ruslelena [56]3 years ago
3 0
The answer would be c
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Answer:

Angle A is 37 degrees, Angle B is 82 degrees, Angle C is 61 degrees

Step-by-step explanation:

Exterior angles are the supplement of interior angles, so subtract 143 from 180 to find Angle A.

180 - 143 = 37

All angles add up to 180.

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Hope this helped. :)

7 0
3 years ago
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marissa [1.9K]
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Work Shown:

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IgorC [24]

Answer:

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Step-by-step explanation:

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