Question

Which expression gives the measure of abc

Answer 1

It’s the option B on apex !!

Explanation:

Answer 2

Option B
`(1)/(2)(110\°+20\°)`

Explanation:

we know that

The measure of the interior angle is the semisum of the arcs comprising it and its opposite.

so

In this problem

`m<ABC=(1)/(2)(arc\ AC+arc\ DE)`

substitute the values

`m<ABC=(1)/(2)(110\°+20\°)`

`m<ABC=65\°`