Question

In triangle pqr, pq = pr and angle q =2/5 th of angle p. find the measure of angle p. 2

Answer 1

angle P+angleQ+angleR=180(angle sum property of triangle) -1

angleP=angleR(opposite angles of equal sides PQ=PR are equal)

angle P=angleR=x

from equation 1

x+x+100=180 (Q=100and P=R=x)

2x+100=180

2x=180-100

2x=80

x=80/2

x=40

so, angle P=angleQ=40(prooved)

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Answer 2

The Answer is 180 degree