Normally none but it does have perpendicular lines that meet at right angles.
Parallel lines do not meet and so cannot form an angle.
A right angle triangle has no parallel sides
Two lines but they can't be parallel. It would be better to say two rays that share the same endpoint form an angle. However, two intersecting lines form angles also. Two rays can form a 180 degree angle if they share the same endpoint and point in exactly the opposite directions. Two perpendicular lines can form a right or 90 degree angle.
1
There are no parallel sides in a right angle triangle
There are no parallel lines in any triangle but a right angle triangle has perpendicular line that meet each other at 90 degrees.
Normally none but it does have perpendicular lines that meet at right angles.
There are no parallel sides in a right angle triangle
Parallel lines do not meet and so cannot form an angle.
None. Triangles do not have parallel sides
It has a pair of perpendicular lines that meet at right angles to form the 90 degree angle of a right angle triangle.
A right angle triangle has no parallel sides
A right angle triangle has no parallel sides
Zero
Perpendicular lines = lines which are at right angles (90 degrees) to each otherDiamond = 2 pairs of parallel lines
Two lines but they can't be parallel. It would be better to say two rays that share the same endpoint form an angle. However, two intersecting lines form angles also. Two rays can form a 180 degree angle if they share the same endpoint and point in exactly the opposite directions. Two perpendicular lines can form a right or 90 degree angle.