Question

In the diagram shown, what is the measure of ZBAC?
Divide the angle measure by 2.

Answer 1

It’s probably going to be b or a

Answer 2

21 (42 for original, 21 is the angle measure divided by 2)

Explanation:

First let's start by finding the value of x.

We know that Angle BCA is equivalent to 180-8x+30 so Angle BCA = 210-8x.

Since angles in a triangle add up to 180:

4x+8+2x+2+210-8x=180

-2x=-40

x=20

Now we plug 20 in for x

2x+2=2(20)+2=42

The question asks for the angle measure to be divided by 2 so...

42/2=21