1.

.The angles of a triangle are (3x – 30), (4x – 60)° and 2x°. The measures of anglesare​

Answer»

PROPERTY USED

ANGLE SUM PROPERTY OF TRIANGLE

SOLUTION

(3x – 30) + (4X – 60) + 2x = 180 ( as discussed above)

3x -30 + 4x -60 + 2x = 180

9x - 90 = 180

9x = 270

x = 270/9 = 30

angles are :

(3x-30) = (3*30 - 30) = 60°

(4x-60) = (4*30 - 30) = 60°

2x = 2*30 = 60°

hence the answer is 60°,60° and 60°


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