Question 1056111
In every triangle, the sum of the angles = 180 degrees.
We have 3 angles, let them be A, B, and C
B = 5A
C = 4A-18
A+5A+4A-18 = 180
10A = 198
A = 19.8
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A............. 19.8
B 5(19.8)..... 99
C 4(19.8)-18.. 61.2
Total: . . .. 180 Correct