# In a 2

In a thirteen sided polygon, the sum of five angles is 1274°, four of the eight angles remaining are equal and the other four are 18° less than each of the equal angles. Find the angles. .

Correct result:

A =  97.25
B =  79.25

#### Solution:

1274 + 4•A + 4•B = 180•(13-2)
B = A - 18

4A+4B = 706
A-B = 18

A = 389/4 = 97.25
B = 317/4 = 79.25

Our linear equations calculator calculates it.

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Showing 1 comment:
Dr Math
A = 97.25 (4 angles)
B = 79.25  (last 4 angles)
first 5 angles cannot be determined

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