A triangle, no matter the type, can never have any parallel sides. To try this out, draw any two parallel lines on a sheet of paper and try to make a triangle out of it.
It can have 0, 1 or 2 pairs of parallel lines.
None.
NoneOctagon hasn't got any pairs of parallel line
NO! It only has 1 pair of parallel lines. 1 Remember 1! Not 2, 1! Got it? Good! :) Now remember again, always listen to your teacher, and never slouch so that you would fall asleep in class. REMEMBER! 1 is the answer
A triangle, no matter the type, can never have any parallel sides. To try this out, draw any two parallel lines on a sheet of paper and try to make a triangle out of it.
It can have 0, 1 or 2 pairs of parallel lines.
None.
In general, a triangle can have 0, 1 or 3 lines of symmetry.
First of all, your grammar is terrible. The question should be "Does a triangle have 2 lines of symmetry and 2 lines of rotational symmetry? and the answer is no. A triangle can not have 2 lines of rotational symmetry, because you only rotate the image, you do not use any lines.
NoneOctagon hasn't got any pairs of parallel line
two if the triangle has a right angle
no....it got 2 acute angles though
The shape that has no lines of symmetry and 2 pairs of parallel sides is a trapezoid. A trapezoid is a quadrilateral with at least one pair of parallel sides, and it does not have any lines of symmetry due to its asymmetrical nature. The two non-parallel sides of a trapezoid are typically of different lengths, further emphasizing its lack of symmetry.
Well the easiest way to do this (but in no way perfectly accurate) would be to extend both lines as far as you can on either end. If the lines never meet on either side you've got parallel lines. Well, either that or you're not drawing straight lines, or you haven't drawn them out far enough. The accurate way would be to draw a perpendicular line from one of them towards the other and measure the angle against the second line. If it's perpendicular to both lines you've got yourself parallel lines.
It can - up to 6 pairs of parallel sides.
No but it has perpendicular lines that meet at right angles.