Question

What is the measure of the third angle of this triangle?

Please explain how to solve in a easy way

Answer 1

Every triangle is equal to 180 degrees so u need to subtract what is already shown form 180,, 180-120=60 and then 60-40 20 so the final degree is 20 ,,,,, to check u can add them all together if if they equal 180 u should be g