Missing exterior angle of a polygon
The exterior angles of any polygon add to 360°. Subtract the ones you know.
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A polygon has 4 exterior angles. 3 of them measure 41°, 44° and 139°. What is the other exterior angle, in degrees?
Answer: 136
A polygon has 4 exterior angles. 3 of them measure 141°, 24° and 56°. What is the other exterior angle, in degrees?
Answer: 139
A polygon has 4 exterior angles. 3 of them measure 122°, 43° and 26°. What is the other exterior angle, in degrees?
Answer: 169
Tip: The exterior angles of any polygon add to 360°. Subtract the ones you know.
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