Mathematics
Grade9
Easy
Question
The value of x is
- 5
- 12
- -7
- -6
Hint:
Using sum of angles in a triangle is 180° frame equation and solve it to find the value of x.
The correct answer is: 12
From the above triangle 60°,60° and (5x)° are the angles .
60°+ 60°+ (5x)° = 180° ( sum of angles in the triangle)
120° + 5x° = 180°
5x° = 60°
x ° = 12°
Therefore , the value of x is 12
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