D. They are congruent triangles
School sucks doesn’t it?
Answer:
x = 8.4
Step-by-step explanation:
7 x 1.2 = 7 + 1.4 = 8.4
x=8.4
check:
8.4 / 1.2 = 7
Vectors are orthogonal, when dot product


Vectors

and

are orthogonal.
Answer:
C
Step-by-step explanation:
Given Coordinates:
(-4, -2), (2, -2), (4, 2), (-2, 2)
The shape that uses the coordinates (-4, -2), (2, -2), (4, 2), (-2, 2) would make a parallelogram.
See graph for answer:
So correct choice is C.