Question

Steven is building a fin for his surfboard.

In order to make the fin, he needs to know the value of x in the following diagram.
-15
30*
Use your knowledge of triangle angle relationships to find the value of x.

Answer 1

x = 45 °

Explanation:

An exterior angle in a triangle is equal to the sum of the opposite interior angles.

Therefore,

30° + 15° = x°

45° = x°

Hope this helps you.

Let me know if you have any other questions :-)