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Galina-37 [17]
3 years ago
7

12. What is the sum of the interior angles for a pentagon? (1 point)

Mathematics
1 answer:
blagie [28]3 years ago
5 0

Answer:

540°

Step-by-step explanation:

Consider a regular pentagon. Divide it radially into five congruent, isosceles triangles. Each triangle has a vertex angle of 360°/5 = 72°, and base angles of (180°-72°)/2 = 54° each.

An interior angle of the pentagon is made up of two of those 54° angles, so interior angle = 108°.

Sum of interior angles = 5·108° = 540°

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Read 2 more answers
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Kobotan [32]

Answer:

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-5a .     = .      -40  

---------         ----------

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5 0
4 years ago
Chanel found a used bookstore that sells pre-owned DVDs and CDs. DVDs cost $9 each, and CDs cost $6 each. Chanel can spend no mo
Vadim26 [7]

The question is incomplete. Kindly see the correct question below

Chanel found a used bookstore that sells pre-owned DVDs and CDs. DVDs cost $9 each, and CDs cost $6 each. Chanel can spend no more than $108 Write an inequality that represents this

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