Question

Two adjacent angles have common -

• A. ray
• B. angle
• C. angle bisector
• D. vertex

Answer 1

Answer: (A), (D)

vertex

Adjacent angles are the angles that share a common ray and a common vertex.
For example,

$\angle {20}^o$ and $\angle {60}^o$ are adjacent to each other.
They share a common ray, shown here by the dashed line.

Also, the vertex $Y$ is common to both the angles.
Hence, the correct options are (a) and (d).