1 * 4 4
2----- 2-----
3 * 4 12
+ 3 * 3 + 9
1----- 1-----
4 * 3 12
------------------------
13
3 -----
12
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If ABCD is a parallelogram, we have to prove that slope of
AB = CD and slope of BC = DA. Using the formula m = (y1-y2) / (x1-x2), the
slope of line segment AB = 0/-4, CD =
0/-4, BC = 1, DA = 1. Going back to the
condition, the slope we get for each line segment proves that ABCD is a
parallelogram.
Answer:
Step-by-step explanation:
Coplanar lines are R, U, and V
H, it's asking for the total amount of money spent. so you add.
