Fine the measures of the angles of a triangle if the angles are represnted by x, 4x, and 5x.

Answer 1

we know that the interior angles of a triangle must sum to 180, therefore

x + 4x + 5x = 180

10 x = 180

x = 18

so the three angles would be

x = 18 deg

4 x = 4(18) = 72 deg

5x = 5(18) = 90 deg

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