Question

a. 12
b. 22
c. 80
d. 40

1. what is the name of the ray that is opposite ray ( ba )?

a. ray ( ad )
b. ray ( ac )
c. ray ( cb )

Explanation:

Step1: Understand the concept of opposite rays

Opposite rays are two rays that have the same endpoint and form a straight line (i.e., the angle between them is \(180^{\circ}\)). Ray \(BA\) has endpoint \(B\) and goes towards \(A\).

Step2: Identify the ray with the same endpoint and opposite direction

Looking at the options, ray \(BD\) (but since the options are \(AD\), \(AC\), \(CB\)), for ray \(BA\) (endpoint \(B\)), the ray that is opposite (same endpoint \(B\) and in the opposite direction) among the given options is ray \(BD\) but if we consider the line \(AD\) (since \(A - B - C - D\) are colinear), ray \(AD\) has the same line as ray \(BA\) but in the opposite direction.

Answer:

A. ray \(AD\)