Answer:
150
Explanation:
An equilateral triangle has 3 congruent angles.
Each angle of an equilateral triangle measures 60°.
A square has 4 right angles.
Each angle of a square measures 90°.
The measures of the 2 angles of equilateral triangle and one right angle of the square have a total measure of
60° + 60° + 90° = 210°
A full circle has a degree measure of 360°.
x° = 360° - 210°
x = 150