Question

In Fig. 10.35, name all rays with initial points as A, B and C respectively.

(i) Is ray $\overrightarrow{AB}$ different from ray $\overrightarrow{AC}$?
(ii) Is ray $\overrightarrow{BA}$ different from ray $\overrightarrow{CA}$ ?
(iii) Is ray $\overrightarrow{CP}$ different from ray $\overrightarrow{CQ}$ ?

Answer 1

Name of all rays with initial point as A : $\underset{\mathrm{AP}}{\to }$ and $\underset{AB}{\to }or\underset{AC}{\to }or\underset{AQ}{\to }$
Name of all rays with initial point as B : $\underset{\mathrm{BP},}{\to }or\underset{\mathrm{BA},}{\to }$ and $\underset{BC}{\to }or\underset{BQ}{\to }$
Name of all rays with initial point as C : $\underset{\mathrm{CP},}{\to }or\underset{CA}{\to }or\underset{CB}{\to }$ and $\underset{\mathrm{CQ}}{\to }$

(i) No, because the origin point of both the rays $\underset{AB}{\to }$ and $\underset{AC}{\to }$ is same.
(ii) Yes, because the origin point of both the rays $\underset{BA}{\to }$ and $\underset{CA}{\to }$ is different.
(iii) Yes, because both the rays $\underset{CP}{\to }$ and $\underset{CQ}{\to }$ are in opposite directions.