In a quadrilateral, if one angle is 120 degrees and the other three angles are e

In a quadrilateral, if one angle is 120 degrees and the other three angles are equal, what is the measure of each of the equal angles?

In a quadrilateral, if one angle is 120 degrees and the other three angles are equal, what is the measure of each of the equal angles?

Step 1: Understand that a quadrilateral has four angles.
Step 2: Know that the total sum of all angles in a quadrilateral is 360 degrees.
Step 3: Identify that one angle is given as 120 degrees.
Step 4: Subtract the 120 degrees from the total sum: 360 degrees - 120 degrees = 240 degrees.
Step 5: Recognize that the remaining three angles are equal, so we need to divide the 240 degrees by 3.
Step 6: Calculate the measure of each equal angle: 240 degrees ÷ 3 = 80 degrees.
Step 7: Conclude that each of the equal angles measures 80 degrees.

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