3 years ago

Measurement and Geometry 11. What would the total interior angles be for a 21 sided shape?

Mathematics

2 answers:

svetlana [45]3 years ago

8 0

Answer: 3420 degrees

Explanation: You use the formula 180(n-2) with n = 21 to find the answer above.

Rzqust [24]3 years ago

4 0

Answer:

sum_of_interior_angles = (number_of_sides - 2) x 180° → if number_of_sides is 21: sum = (21 - 2) x 180° = 19 x 180° = 3420°

Step-by-step explanation:

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