Question

http://prntscr.com/pv41p4

Answer 1

@Vocaloid @dude

Answer 2

Do you have any ideas how to solve this?
What do you know about the amplitude of angles opposite to equal sides in a triangle?

Answer 3

@Nicole from your drawn result this is an issoscelle triangle with two lateral sides equale

yes ? opposite to these equal sides there are two equal angles

yes ? bc. you know that the sum of angles measures of a triangle equal 180 degrees

from this than you substract the measure of the 3rd angle and the result divide by 2 so will get the measure of these equale angles of this triangle

hope you know that angle measure of a line equal 180 degrees

in this case just you need subtract from 180 degree the angle measure of this triangle and in this way will get easy the value of x


hope this is understandably easy