Question

In triangle PQR, if PQ=PR and angle P = 40
degree ,then angle Q is *
a) 140 degree
b) 40 degree
c) 70 degree
d) 80 degree​

Answer 1

Answer:

Angle Q = Angle R

Angle( P + Q + R ) = 180

P + 2Q = 180

2Q = 140

Q = 70

Answer 2

Step-by-step explanation:

As, PQ=PR

So, angle Q = angle R

{{{{{{{bcz in a triangle if sides are equal then there opposite angle are also equal}}}}}}

By angle sum property:

P+Q+R=180°

P+Q+Q=180°

P+2Q=180°

40°+2Q=180°

2Q=140°

Q=70°

Hence, angle Q =70°

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