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2 items are filed under this topic.
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The sum of the angles of a triangle |
2016-02-24 |
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From Sophia:
Does every triangle add up to 180 degrees? (Such as a unique triangle)
Answered by Penny Nom. |
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Euclid's Parallel Postulate |
2013-08-20 |
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From Justin:
Hello there,
I was wondering is Euclid's Fifth Parallel Postulate of parallel lines never intersecting, undecidable or essentially undecidable?
Thank you so much for any help you can provide!
Answered by Robert Dawson. |
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