The measure of angles of a triangle are x° ,( x- 30)°, (x- 60 )° . the value of x is _______
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4
Answer:
90
Step-by-step explanation:
angle sum property,
x + (x-30) + (x-60) = 180
x + x - 30 + x - 60 = 180
3x - 90 = 180
3x = 270
x = 90
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