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SAI International School
CLASS - VIII
Mathematics
CHAPTER-3: Understanding Quadrilaterals Lesson Notes-3
SUBTOPIC : SUM OF THE MEASURES OF THE EXTERIOR ANGLES
OF A POLYGON
Sum of the Measures of the Exterior Angles of a Polygon
Ex
am
ple
:
Fin
d
me
asu
re
x.
Solution: x + 90° + 50° + 110° = 360° (proved above)
x + 250° = 360°
x = 110°
In general form:
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