Question

Question 84(i)

What is the type of other angles of a linear pair, if one of its angles is acute?

Answer 1

Sum of angles of a linear pair is ${180}^{\circ }$.
If one angle is an acute angle, then the other angle will be obtuse. As, if we subtract an subtract an acute angle from ${180}^{\circ }$, we get an angle which is greater than ${90}^{\circ }$.