URGENT HELP Pqr is an isosceles triangle and prs is a straight line

Mathematics

1 answer:

katrin2010 [14]2 years ago

5 0

Answer:

∠ QRS = 132°

Step-by-step explanation:

Since the triangle is isosceles then the 2 base angles are congruent, that is

∠ PQR = ∠ PRQ = $\frac{180-84}{2}$ = $\frac{96}{2}$ = 48°

∠ PRQ and ∠ QRS are adjacent angles , so

∠ QRS = 180° - 48° = 132°

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