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If a triangle has a right angle it is a right triangle Iff if and only if a triangle has a right angle it is a right triangle?
Wiki User
∙ 13y ago
This is one of those instances where US terminology causes totally unnecessary confusion.
The original description of a triangle containing a 90o angle is "a right-angled triangle".
Wiki User
∙ 13y ago
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When a conditional and its converse are true what can you combine them as?
a biconditional"All triangles have 3 sides" and "A polygon with 3 sides is a triangle" can be combined as "A polygon is a triangle if and only if it has 3 sides."The phrase "if and only if" is often abbreviated as "iff".
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What is the difference between "if" and "iff" in formal logic?
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