Question

How do I find angle 1?

Answer 1

60º

Explanation:

The two triangles on the left are equilateral as the sides are all conguent.

The angles of an equilateral triangle are all 60º

Therefor the two angles to the left of angle 1 are both 60º for a combined value of 120º

Angle 1 must be 180 - 120 = 60º

Answer 2

To find angle 1, you have to add all adjacent angles, which equal 180°