Exemplar Exercise Problems IV — task. Mathematics CBSE, Class 9.

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1. In Fig., if \(OP||RS\), \(∠OPQ = 110^°\) and \(∠QRS = 130^°\), then \(∠ PQR\) is equal to

YCIND_240306_6084_lines and angles_8.png

\(40^{\circ}\)
\(60^{\circ}\)
\(70^{\circ}\)
\(50^{\circ}\)

2. Angles of a triangle are in the ratio \(2:4:3\). The smallest angle of the triangle is

\(80^{\circ}\)
\(20^{\circ}\)
\(60^{\circ}\)
\(40^{\circ}\)

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