Answer:
- Option D is correct answer that is 109° .
Explanation:
Question : -
Find the value of x in this triangle .
Given : -
- Angle 3 = y° ( We are assuming it as y )
To Find : -
- We have to find the value of x .
Solution : -
We know that sum of all the interior angles of triangle is equal to 180° . Then ,
- Angle 1 + Angle 2 + Angle 3 = 180°
- 37° + 72° + Angle 3 = 180°
Therefore , Angle y = 71° .
Now , We know that Angle 3 and Angle 4 is equal to 180° because they are Linear pair . So ,
- Angle 3 ( y )+ Angle 4 ( x ) = 180°
Therefore , value of Angle x is 109° .
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