+0  
 
0
34
1
avatar

Work out the size of the angle marked x.

 

 Mar 25, 2021
 #1
avatar
0

 

Since AB is parallel to CF, then angles BAE and DEA are equal    

 

So angle DEA = 38o   Note that this is one of the angles in triangle DEA  

 

The sum of the interior angles of a triangle is 180o so the other two angles total 142o  

 

Since sides AE and DE of triangle DEA are equal, each angle EAD and EDA are equal  

 

So angles EAD and ADE each are equal to 71o apiece  

 

Angle CDA equals 180o minus angle ADE, thus 180o – 71o  = 109o   

 

x  =  109o   

 Mar 25, 2021

27 Online Users

avatar
avatar
avatar
avatar