R. D. Sharma Solutions for Chapter: Lines and Angles, Exercise 3: EXERCISE

In the given figure, find the value of $x$.

In the given figure, rays $AB$ and $CD$ intersect at $O$.

Determine $y°$ when $x=60°$. (Answer should be the value of $y$ without degree symbol)

In the given figure, rays $AB$ and $CD$ intersect at $O$.

Determine $x$ when $y=40°$.

Angles forming a linear pair can both be acute angles.

A ray stands on a line, then the sum of the two adjacent angles so formed is _____$°$.

If the sum of two adjacent angles is $180°$, then the _____ arms of the two angles are opposite rays. (uncommon/common)

Prove that the bisectors of a pair of vertically opposite angles are in the same straight line.

If two straight lines intersect each other, prove that the ray opposite to the bisector of one of the angles thus formed bisects the vertically opposite angle.