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agasfer [191]
3 years ago
11

AB is perpendicular to CD . How many 90° angles are formed by the intersection?

Mathematics
1 answer:
Oksana_A [137]3 years ago
5 0
Perpendicular lines make a cross. There are 4 right angles. 
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Answer:

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Step-by-step explanation:

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In case you don't remember that form, you can try any of the points in the equations. The equation that works will quickly become apparent.

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