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Line AB is tangent to circle C at point B and Line AD is tangent to circle C at point D. What is the measure of angle A? May 12, 2020

#1
+2

The sum of the internal angles of a quadrilateral is 360o

you have TWO 90 degree angles PLUS a 124angle...... the rest of the 360o is angle A

May 12, 2020

#1
+2

The sum of the internal angles of a quadrilateral is 360o

you have TWO 90 degree angles PLUS a 124angle...... the rest of the 360o is angle A

ElectricPavlov May 12, 2020
#2
+1

Just an observation.  This question adheres to the standard format for multiple choice questions.  Of the choices of answers,

1 choice is correct,                    EP's excellent analysis shows us how to deduce that 56o is correct.

1 choice is almost correct,         62o is close enough to 56 that you can't tell tell them apart by eye.

1 choice is wrong,                      You can tell that 34o is wrong because that size angle is too acute.

1 choice is ridiculous.                 124o is obtuse, impossible for an internal angle of a quadrilateral.

.

May 12, 2020