Question

1. what is the included angle between sides ab and ac in △abc?

a. ∠bca
b. ∠abc
c. ∠acb
d. ∠bac

Explanation:

Step1: Recall the definition of included angle

The included angle between two sides of a triangle is the angle formed by those two sides.

Step2: Identify the sides and the angle

For sides \(AB\) and \(AC\) in \(\triangle ABC\), the angle formed by \(AB\) and \(AC\) is \(\angle BAC\).

Answer:

d. \(\angle BAC\)