<u>Answer-</u>
<em>The length of BC is </em><em>8 units.</em>
<u>Solution-</u>
Mid-Point Theorem-
The line segment connecting the midpoints of two sides of a triangle is parallel to the third side and is congruent to one half of the third side.
As given,
AD = DB, so D is the mid point of AB
FA = FC, so F is the mid point of AC
Hence, DF is the line segment connecting the midpoints of two sides of a triangle.
Applying the theorem,
BC = 2DF = 2×4 = 8 units
Answer: C. 53º, 55º
Step-by-step explanation:
1. By definition, the sum of the interior angles of a triangle is 180 degrees.
2. Keeping this on mind, you have:

As you can see, the sum of the other two angles must be 108 degrees, then, let's add the angles given in each option:
A. 9°+9°=18
B. 26°+46°=72°
C. 53°+55°=108°
D. 72°+108°=180°
3. Therefore, the answer is the option C.
Number 1 is a because you would minus 1 from both sides to get the x alone.
<span>D. LJ congruent to VT</span>
The points on the graph ( b , c )
I hope I helped you ^_^