Answer:
Commutative Property for Multiplication
To find if something is a parallelogram, they 1 set of line segments need to have the the slope. In this equation, Slope equals x1 + x2 divided by y1 + y2 (Or the other way around, x2 + x1 divided by y2 + y1)

For your other point, it could be (-4,5)
If this is confusing, please tell me! I'll try to better explain. It also helps to draw out a graph so you can plot the points.
Answer:
yes
Step-by-step explanation:
because the longest side of a triangle must equal less than the sum of the other two, 3+7=10 which is greater than 8 means it is a triangle.
Answer:
39 and 35
Step-by-step explanation: