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nordsb [41]
2 years ago
13

hii - i just wanted to ask if anyone knew if rotations over the origin will be on the 7th grade math SOL final tomorrow? our tea

chers said it wouldn't be but on the practice tests, there were rotations so i was just wondering if anyone knew about it :)
Mathematics
1 answer:
wel2 years ago
5 0
Answer:
Part a)
Part b)
Step-by-step explanation:
Part a) we know that
-----> by supplementary angles
solve for m
Part b) we know that
The sum of the internal angles of a triangle must be equal to 180 degrees
so
in this problem

we have

substitute and solve for m


therefore
The triangle of the figure is an equilateral triangle ( has three equal angles and three equal sides)
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===================================================

Work Shown:

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Basically we subtract the y coordinates, and do the same for the x coordinates as well (subtract in the same order). Afterward, divide the two results. Reduce the fraction as much as possible.

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