Question

Need some help with this question in my math class

Answer 1

m∠CAD is 100°

Explanation:

The angles of a triangle always add up to 180 degrees.

`80+20+x=180`

Add...

100+x=180

Subtract 100 from each side...

x=80°

m∠CAB=80

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A line is always 180°... line DB consists of m∠CAB (just solved) and m∠CAD (which the answer asks)

m∠CAB+m∠CAD=DB

Substitute in the information we have.

80°+m∠CAD=180°

Subtract 80 from both sides...

m∠CAD is 100°

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I hope my answer makes sense to you! :)