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A right triangle has

three sides with the same length

two sides that are parallel

at least two congruent sides

two sides that are perpendicular

User Googlian
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2 Answers

2 votes
Two sides that are perpendicular.
User Betabandido
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4 votes
Two sides that are perpendicular, because perpendicular lines create a right angle... and a right angle triangle has a right angle
User Dan Croak
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