Question

In ∆PQR, ∠ P = 500

, ∠ Q = 450

, find measures of, ∠ R.
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Answer 1

Given:

In ∆PQR,

∠P = 50°

∠Q = 45°

To find:

<R = ?

According to the angle sum property of a triangle,

<P + <Q + <R = 180°

50°+ 45°+ <R = 180°

<R = 180°-95°

<R = 85°