2 answers:
Answer:
what is a parallelogram------------->Each diagonal forms two equivalent triangles.
A parallelogram can't be inscribed in a triangle with less than twice its area.
Consecutive angles in a parallelogram are always supplementary.--------------->a four-sided plane rectilinear figure with opposite sides parallel.
Step-by-step explanation:
A Parallelogram is a flat shape with opposite sides parallel and equal in length.
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What angels? You need to show a picture :)
Inductive: determine the pattern
deductive: to calculate the next term
and your problem looks like its deductive
Answer: Both diagonals bisect each other.
Use this formula:

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5. d=10
6. d=4
7. d=4
Answer:

Step-by-step explanation:
We can multiply -4x by both terms inside the parentheses.


Hope this helped!