Question

Let a equal measure of a angle a. The equation 360ﾟ= a + 90ﾟ+ 135ﾟ+ 75ﾟ represents the sum of the angles in the quadrilateral. Find the missing angle measure by solving the equation.​

Answer 1

Answer:

A = 60°

Step-by-step explanation:

First to find the missing angle you add the three known angles,

90 + 135 + 75 = 300

Then, you subtract, 360 - 300 = 60

So, 360° = 60° + 90° + 135° + 75°

Answer 2

Answer:

A = 60 percent

Step-by-step explanation: