Respuesta :

gronto
Tha answer is C

Explanation:

You have to fine the measure of angle CAB

Since a triangle has interior angles that add up to 180° we can add angles of 80° and 20° and subtract that from 180°

We get 80° for angle CAB

Now we know that a straight line has an angle of 180° so if 80° is on the inside of the triangle that mean 100° is on the outside.

Brainliest my answer if this helps?

The value of m<CAD will be 100°.

It should be noted that the total angle in a triangle is 180°, therefore, the value of the third angle will be:

= 180° - (80° + 20°)

= 180° - 100°

= 80°

Now, to solve for m<CAD, we have to use angle on straight line which will be:

= 180° - 80°

= 100°

In conclusion, the correct option is 100°.

Read related link on:

https://brainly.com/question/12047360

Otras preguntas