Answer:
Step-by-step explanation:
bisects 
and 
.
Solve for m.
Subtract 3m from both sides.
Divide both sides by 3.
Calculate 
.
Put m = 7.
Answer:
the 4th one
Step-by-step explanation:
You can compose, or create, a parallelogram (a four-sided shape with two sets of opposite, parallel sides) using two shapes, such as triangles or squares. You can decompose, or take apart, a parallelogram by dividing it from opposite corners, either vertically or horizontally.
Answer:
C. He found the midpoint of a segment.
Step-by-step explanation:
The midpoint is the point that divides a segment into two equal parts. Thus it is located at the middle of the segment.
John used this simple method to determine the midpoint of a segment. For example, let a segment AB = 10 cm be folded in half. A point made at the fold would be at 5 cm, which is the midpoint of the segment.
Thus the appropriate answer to the question is option C.
