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

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1. An exterior angle of a triangle is \(105^°\) and its two interior opposite angles are equal. Each of these equal angles is

\(52\frac{1}{2}^{\circ}\)
\(37\frac{1}{2}^{\circ}\)
\(72\frac{1}{2}^{\circ}\)
\(75^{\circ}\)

2. The angles of a triangle are in the ratio \(5 : 3 : 7\). The triangle is

an acute angled triangle
an obtuse angled triangle
a right triangle
an isosceles triangle

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