Some true facts about a 45-45-90 triangle:
the sides of ABC are congruent to the sides of A'B'C'
Lots of statements about novels are true.
Lots of statements are not true about polymers.
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true
That will depend upon the statements of which none have been given about a right angle triangle.
the sides of ABC are congruent to the sides of A'B'C'
Identities are statements that are true for any number.
If the given numbers represent degrees then it is a right angle triangle whos 3 angles add up to 180 degrees.
they was a diverse group
What are three statements that are true about Francis Drake?
They can be constructed in more than one way. They have fractional dimension. They are self-similar. They are constructed by removing small triangles from a big triangle.
the longer leg is root 3 times as long as the shorter leg, and the hypotenuse is twice as long as the shorter leg.
"In mathematics, a proof is a demonstration that if some fundamental statements (axioms) are assumed to be true, then some mathematical statement is necessarily true." (from Wikipedia)
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true