Explanation:
Question 1:
All triangles have a sum of 180°.
180 - (56 + 39)
180 - 95 = 85
So, now that you know the measurement of the third angle of the triangle, you can find the missing exterior angle. Exterior angles and interior angles that are side-by-side are supplementary angles meaning that have a sum of 180°. So, you would subtract 85 from 180 which is 95.
So, the measurement of the missing angle is 95°.
Question 2:
All triangles have a sum of 180°.
we already know the angle of ∠1 and since the triangle is an isosceles triangle, then both of the base angles have a measurement of 67°. Now, we find the value of x.
180 - (67 + 67)
180 - 134 = 46
3x - 14 = 46
3x = 60
x = 20
So, the value of x is 20.