Question

In the adjoining figure measure of Angle ABC and ACD Are indicated calculate the measures of the remaining Angle is triangle ABC isosceles
Give reasons

Answer 1

Answer:

in this pic

OK so ur answer is here

Answer 2

Answer:

Step-by-step explanation:

BAC = 80

ACD = 130

ACB+ACD=180              [Linear Pair]

ACB+130=180

ACB=180-130

ACB=50

Sum of interior angles of a triangle is 180

BAC+ACB+ABC=180

80+50+ABC=180

130+ABC=180

ABC=180-130

ABC=50

Yes triangle ABC is isosceles because angle ABC=ACB=50

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