+0  
 
0
60
2
avatar

https://vle.mathswatch.co.uk/images/questions/question1326.png

 Jul 16, 2020
 #1
avatar
0

I am assuming 72

 Jul 16, 2020
 #2
avatar+21953 
0

The lower left-hand corner angle of the triangle is 85o because it is vertical to an 85o angle.

 

Since the lines are parallel, the angle supplementary to the lower right-hand corner angle of the 

triangle is 98o.

This makes the lower right-hand corner angle of the triangle 180o - 98o  =  82o.

 

Now, we know two of the three angles of the triangle; all we need to do is find the size of the

third angle.  180o - 85o - 82o  =  .......

 Jul 16, 2020

20 Online Users