Divide the nonagon radially into 9 congruent, equilateral isosceles triangle. Each triangle has vertex angle of 360°/9 = 40°.
Interior angle of polygon = 180°-40° = 140°.
Sum of interior angles = 9(140°) = 1260°
Answer:a²=b²+c² in a right angle triangle so answer is root 136
Step-by-step explanation:
Answer:
30 miles an hour
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Answer:
9
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Answer:
C
Step-by-step explanation:
Because its right