PLS HELP ON MATH QUIZ PT.2
1 answer:
Given:
In the given figure, .
To find:
The measure of angle 3.
Solution:
According to the exterior angle theorem of a triangle, the measure of exterior angle is equal to the sum of two opposite interior angles of a triangle.
Using exterior angle theorem of a triangle, we get
The value of x is 20. So, the measure of angle 3 is:
Therefore, the measure of angle 3 is 150 degrees.
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