Question

∆PQR is such that ^P =^Q =^ R = 60°
which of the following is true?
1) ∆PQR is equilateral
2) ∆ PQR is acute angle
3) both a) and b)
4) neither a) and b)
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Answer 1

Answer:

Let ∠Q = ∠R = x, ∠p = 60°

But ∠P + ∠Q + ∠R = 180°

∴ 60° + x + x = 180°

⇒ 60° + 2X = 180°

⇒ 2x = 180° - 60° = 120°

⇒ x = 120°/2 = 60°

∴ ∠Q = ∠R = 60°

Hence, ∠R = 60°

Answer 2

Answer:

I think a /\ QPR is equilateral