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stiv31 [10]
2 years ago
8

D B a А b С F Choose 1 answer: A Vertical angles B Complementary angles © Supplementary angles None of the above

Mathematics
1 answer:
prisoha [69]2 years ago
5 0

9514 1404 393

Answer:

  (c) Supplementary angles

Step-by-step explanation:

The angles of a linear pair are supplementary. Angles 'a' and 'b' form a linear pair. That is, ...

  ∠EAB + ∠BAC = ∠EAC, a straight line

Consequently, angles 'a' and 'b' are supplementary.

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X to the second power = 500 <br><br> what values can be used SQUARE ROOTS ONLY PLEASEEE!!!!!
Dahasolnce [82]
500
because when you power to the second power a square root, it cancels and the answer is the number you originally had
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3 years ago
If rectangle ABCD is rotated counter clock wise 90º about the origin, what will be the coordinates of the vertex D'?
7nadin3 [17]
So, the best way to do this is translate it to clockwise. 90 degrees counterclockwise is equal to 270 degrees clockwise. So, basically, to rotate, you would follow the following format for each point-
(X,Y) -> (-Y,X)
Now, you do it for each of the points.
A= (-5,5), so A' would be (-5,-5)
B= (-1,5), so B' would be (-5,-1)
C= (-5,4), so C' would be (-4,-5)
D= (-1,4) so D' would be (-4,-1)
Notice, how all the points end up in the square below it. Each quadrant has a specific number. The top right is quadrant 1, the top left is quadrant 2, the bottom left is quadrant 3, and the bottom right is quadrant 4. If you are rotating 270 degrees clockwise, you move to the right, like a clock. That puts the new rectangle in quadrant 3. That is a way to check your work.
Now, just so you know for future reference, the following are also different formats for different problems--
A 90 degree Clockwise rotation about the origin will be (X,Y) -> (Y, -X) *Note, -x just stands for the opposite. Say your original x is a negative number. Then the prime (new) x will be positive.
A 180 degree Clockwise rotation about the origin would be (X,Y) -> (-X,-Y) *Note, -y also stands for the opposite.
A 270 degree clockwise rotation about the origin would be (X,Y) -> (-Y,X).
For translating---
90 degrees Clockwise = 270 degrees Counter
270 degrees Clockwise = 90 degrees Counter

Hope this helped!
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Your answer is four love!
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3 years ago
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