Only once at, a right angle. Paralell lines never meet.
Not normally but as a rectangle it has perpendicular sides that meet at right angles
Perpendicular side meet at right angles.
A rectangle has 4 perpendicular sides that meet each other at right angles.
No triangle can have parallel sides but a right angle triangle has perpendicular sides that meet at 90 degrees
A shape with a pair of perpendicular sides is a rectangle. In a rectangle, opposite sides are equal in length, and adjacent sides meet at right angles, forming perpendicular intersections. Other shapes that also feature perpendicular sides include squares and right triangles.
Not normally but as a rectangle it has perpendicular sides that meet at right angles
Perpendicular side meet at right angles.
A rhombus has no perpendicular sides but its diagonals are perpendicular to each other and meet at right angles.
A rectangle has 4 perpendicular sides that meet each other at right angles.
Where the diagonals meet. Also where the perpendicular bisectors of the sides meet.
No triangle can have parallel sides but a right angle triangle has perpendicular sides that meet at 90 degrees
Yes.
Circumcenter
A triangle has no parallel sides but in the form of a right angle triangle it has perpendicular lines that meet at right angles which is 90 degrees.
A polygon with four or more sides can meet these requirement.
A rhombic octagon. An ordinary regular octagon does have perpendicular sides. They do not meet in the outline of the octagon because they are alternate, but they are still perpendicular. However, in the same way that a rhombus is a distorted square, a rhombic octagon can have 4 pairs of parallel sides but no perpendicular ones.
Yes because they meet at 90 degrees