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19 September, 18:46

In Triangle ABC, the measure of angle B is 36 degrees more than three times the measure of angle A. The measure of angle C is 54 degrees more than the measure of angle A. Find the measure of each angle.

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  1. 19 September, 19:14
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    angle A = 18°

    angle B = 36 + 3 (18) = 90°

    angle C = 54 + 18 = 72°

    Step-by-step explanation:

    A triangle is a shape with 3 sides. The total angle of a triangle is 180°. This means the sum of all the angle is 180°.

    Let

    angle A = a

    angle B = 36 + 3a

    angle C = 54 + a

    The sum of angle A, B and C should be equals to 180°. Therefore,

    a + 36 + 3a + 54 + a = 180°

    collect like terms

    5a + 90 = 180

    5a = 180 - 90

    5a = 90

    divide both sides by 5

    a = 90/5

    a = 18°

    angle A = 18°

    angle B = 36 + 3 (18) = 90°

    angle C = 54 + 18 = 72°
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