Question

In a triangle PQR if ∠QPR = 80° and PQ = PR, then ∠R and ∠Q are​

Answer 1

Answer:

angle Q = angle R = 50

Step-by-step explanation:

PQ = PR

angle Q = angle R = x

In triangle PQR,

angle P + angle Q + angle R =180

80 + x + x = 180

2x + 80 = 180

2x = 100

x = 50

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Answer 2

Step-by-step explanation:

< Q = < R [Angles opposite to equal sides of a triangle are equal.]

<P+<Q+<R = 180° [Angle sum property]

80° + 2 < Q = 180 °

2<Q = 180 -80

< Q = 100 /2

<Q = 50°

since <Q = < R

< R = 50°