No
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There cannot be parallel lines in any [plane] triangles.
2
An isosceles triangle has no parallel sides but 2 of its 3 sides are equal in length
Nope think 2 parallel sides like this ______________ ______________ there would have to be another 2 lines..and we all know there are 3 lines in a triangle :)
Its a Right Triangle * * * * * No, a right triangle has only one pair of perpendicular lines. One possible answer is a kite, with right angles at the left and right extremes. There would be an obtuse apex and an acute bottom (or the other way around).