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Find the angle measures

1. The ration of the measures of two supplementary angles is 4:5
2. The angle in a triangle are in the ratio 5:4:3
3. The perimeter of a triangle is 90cm and the lengths of its sides are in the ratio 6:5:4. Find the length of the shortest side


Sagot :

Answer:

1. 4x + 5x = 180

           9x = 180

             x = 20

Find angles:

4(20) = 80 degrees

5(20) = 100 degrees