Each question consists of two statements, namely, Assertion (A) and Reason (R). Choose the correct option.
Assertion (A)
Reason (R)
If a ray stands on a line such that ∠ACD = ∠BCD, then ∠ACD = 90°.
If a ray stands on a line then ∠ACD + ∠BCD = 180°.
According to linear pair of angle, sum of angles on straight line is 180
And 90 + 90 = 180o