+0  
 
0
126
2
avatar+1679 

 

In the following figure, AF is the perpendicular bisector of DN. What is the measure of angle CDT?

  

A. 90

B. 125

C. 55

D. 180

 Feb 4, 2020
 #1
avatar+275 
0

If this is drawn proportional to scale, it would be C. Also, I remember there is a thereom to solve this, but I'm sorry I forgot.

 Feb 4, 2020
 #2
avatar+109345 
+3

If  AF is the perpendicular bisector of DN then DF  =  NF

 

So...by  side-angle-side.....triangles DFA  and NFA  are congruent

 

And angle  ADF  = angle ANF   = 55°

 

But angle CDT  is a vertical angle to angle ADF....so it must also measure 55°

 

 

cool cool cool

 Feb 4, 2020

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