Practice with Mid-Segments
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Answer the following questions dealing with mid-segments.

1.

  Find DE.


Choose:

16  
20
 32

 


 

2.

D, and E are midpoints.  Find AB.

  Choose:

8  
16
32 
 64  

 

 

3.

Given AC = 42, CB = 46, AB = 48.
D, E, F are midpoints.
Find the perimeter of triangle DEF.

  Choose:

34  
48
68 
136

 

 

4.

D, E are midpoints.  Find the measure of <A.

  Choose:

134
 46
44 
 23

 

 

5.


A(-2,-4),  B(4,8), C(6,-2),
D(1,2), E(2,-3)

Show that .
Show that .



 Explanation

 


 

6.


Given:  A(4,4),  B(5,9), C(1,3) as the midpoints of the sides of triangle DEF.
 

Find the coordinates of the vertices of triangle DEF.



 Explanation

 

 

 

7.


Prove that the perimeter of a triangle formed by the three mid-segments of a triangle is half the perimeter of the original triangle.

Explanation