A First Look at Angles
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The Questions YOU need to answer
- What is the measure of angle <AOC when A=(15,20)?
- What is the measure of angle <AOD when A=(15,20)?
- What is the name of the relationship between <AOC and <AOD?
- What are the co-ordinates of point O (test your answer by moving point
- What co-ordinates for point A make <AOC a right angle?
- What co-ordinates for point A make <AOC a straight angle?
- What co-ordinates for point A make <AOC a 60° angle?
- Change the co-ordinates for point A but keep the identical 60° angle.
What are the new coords?
- Keeping A at (10, 20). Where can you place point B so that ray OD
- Where can you place A and B so that <AOC is complementary to <BOD?
- Move A to (10, 20). Where can you place point B so that <AOC is a vertical
angle to <BOD?
- Can you find a "formula" or express a "recipe" to generate the co-ords of the vertical angle?
(Hint: Keep point B the same. Notice the horizontal and vertical change as it goes to O.
Now you need to make the same changes to O to get to A.
Check your work by making sure the angles match)
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