Mathematics
Grade9
Easy
Question
The measure of angle X is _____________.
- 60°
- 51°
- 91°
- 87°
Hint:
sum of exterior angles of a heptagon is 360 degrees, remember it
The correct answer is: 60°
so option A 60° is the correct answer
Sum of exterior angles of a heptagon is 360°
So, 52° + 48° + x° + 39° + 27° + 71° + 63° = 360°
x = 60°.
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