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Question

Measure of interior angles of a triangle are (x+10),(x+40) and (2x30). What is the value of x?

A
30
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B
40
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C
20
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D
10
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Solution

The correct option is B 40
Given that the measure of interior angles of the triangle are (x+10), (x+40) and (2x30).

Sum of the interior angles of a triangle =180 (Angle sum property)

(x+10)+(x+40)+(2x30)=180

4x+5030=180

4x=160

x=40

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