+0  
 
0
105
1
avatar+147 

In trapezoid ABCD, sides AB and CD are parallel, \(\angle{A}\) = \(2\angle{D}\), and \(\angle{C}\) = \(3\angle{B}\). Find \(\angle{A}\).

 Sep 12, 2018
 #1
avatar+94545 
+1

Since AB  and CD are parallel

 

Then angles A  and D are supplemental  ....so

 

A  + D   = 180

 

2D + D   = 180

 

3D  = 180

 

D   = 60

 

And  A   = 2D   = 2(60)   = 120°

 

 

 

cool cool cool

 Sep 13, 2018

20 Online Users

avatar
avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.