Answer:

Step-by-step explanation:

Answer:
You are a rectangular prism.
Step-by-step explanation:
Rectangular prisms fill the criteria you described: two triangular faces, three rectangular faces, 6 vertices, and 9 edges. Thus, the answer is correct.
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Answer:

Step-by-step explanation:
The mid point can be found with the formula

The given coordinates are
and
.
Replacing coordinates in the formula, we have

Therefore, the mid point of the segment PQ is 
Slope = 4/1 = 4
hope it helps