The value of x is 70
What is a triangle?
- Any 2-dimensional figure, bounded by 3 sides is called a triangle.
- In a triangle sum of all the angles is 180°
How to find the value of x?
- We know that the net angle on a straight line is 180°
External angle B = 2x°
∴ ∠ABC = (180 - 2x)°
Again External angle C = (2x + 12)°
∴ ∠ACB = ( 180 - 2x - 12)° = (168 - 2x)°
- As we know in a triangle sum of all the angles is 180°.
∴ 112 + (180 - 2x) + (168 - 2x) = 180
⇒ 4x = 280
⇒ x = 70
∴ The value of x is 70
Find out more information about the measure of angles of a triangle here: https://brainly.com/question/25215131
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