In a triangle, the measure of the first angle is three times the measure of the second angle. The measure of the third angle is 80° m

Question

In a triangle, the measure of the first angle is three times the measure of the second angle. The measure of the third angle is 80° more than the measure of the
second angle. Use the fact that the sum of the measures of the three angles of a triangle is 180° to find the measure of each angle.

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Clara 2 weeks 2021-09-10T10:38:30+00:00 1 Answer 0

Answers ( )

  1. Answer:

    first = 60

    second = 20

    third = 100

    Step-by-step explanation:

    first angle = 3x

    second angle = x

    third angle = x + 80

    All of these angles add up to 180.

    3x + x + (x + 80) = 180

    5x + 80 = 180

    5x = 100

    x = 20

    second angle = 20

    first angle = 3 * 20 = 60

    third angle = 20 + 80 = 100

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