Polygon Sum Theory
Authored by Anthony Clark
Mathematics
8th Grade
CCSS covered
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20 questions
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1.
MATH RESPONSE QUESTION
1 min • 1 pt
Mathematical Equivalence
ON
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the SUM of the angle measures in a nonagon (9 sides)?
1440°
900°
1080°
1260°
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find the sum of the interior angle measures of a convex 20-gon.
3240 degrees
3600 degrees
5400 degrees
3060 degrees
4.
DROPDOWN QUESTION
1 min • 1 pt
What is the formula for finding the sum of the interior angles of a polygon? (a)
S= (n-2)180
S= (n-180)2
S= (n-2)180/n
S= (n - 180)2/n
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the sum of the exterior angles of a 20-gon?
180
360
3240
162
6.
MATH RESPONSE QUESTION
1 min • 1 pt
What is the sum of the measures of the interior angles of the regular hexagon?
Mathematical Equivalence
OFF
7.
DRAG AND DROP QUESTION
1 min • 2 pts
The Polygon Angle Sum Theorem says that the sum of the (a) angles of a polygon is equal to (b) degrees.
interior
180(n - 2)
exterior
360(n - 2)
180(n - 1)
180n
360(n - 1)
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