Question

If angle ACD is an exterior angle of triangle ABC angle B=45 ,angle A=75 find angle ACD?

Answer 1

angle A=75

angle B=45

angle C=?

we know angle A+angle B + angle C=180 (angle sum property of triangle)

180=75+ 45+ angle C

angle C=180-(75+45)

angle C =180-120=60

we know 180= angle ACD +angle C (linear pair)

180 - angle C=angle ACD

180 - 60= angle ACD

120= angle ACD

Answer 2

Answer:

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