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Mathematics 21 Online
OpenStudy (callielovesyhuu):

if two lines intersect, then they form right angles true or false? counterexample;

OpenStudy (anonymous):

Sometimes should be the correct answer

OpenStudy (anonymous):

If two lines have opposite slopes, they will from right angles when they intersect.

OpenStudy (anonymous):

But they don't always have opposite slopes

OpenStudy (secret-ninja):

False. |dw:1423754618662:dw| It IS possible, but it doesn't ALWAYS happen. |dw:1423754686779:dw|

OpenStudy (anonymous):

correct

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