ack and Marianne are  trying to determine the sum of the interior angles for the polygon shown below.   Jack says that in order to determine the sum of the interior angles of the polygon you have to figure out how many triangles the shape can be cut into by drawing diagonals from one vertex to all other possible vertices..  Then you multiply the number of triangles by 180^o180o.   Marianne says that in order to determine the sum of the interior angles of the polygon you have to subtract 2 from the number of vertices and then multiply that number by 180^o180o

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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ack and Marianne are  trying to determine the sum of the interior angles for the polygon shown below.

 

Jack says that in order to determine the sum of the interior angles of the polygon you have to figure out how many triangles the shape can be cut into by drawing diagonals from one vertex to all other possible vertices..  Then you multiply the number of triangles by 180^o180o.

 

Marianne says that in order to determine the sum of the interior angles of the polygon you have to subtract 2 from the number of vertices and then multiply that number by 180^o180o.

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