Question

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Answer 1

Step-by-step explanation:

as we know

sum of all angles of a triangle is 180°

So,

P+Q+R=180°

20+Q+30=180

Q=180-50

Q=130°

Answer 2

Answer:

In ∆PQR,

angle pqr+qrp+rpq=180

• pqr+30°+20°=180
• pqr=180-50°
• pqr=130°

As the central angle is greater than 90° , so it is an obtuse angled traiangle.

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