QUADRILATERAL
A rectangle
A Rhombus
rhombus
The quadrilateral you are describing is a parallelogram. In a parallelogram, opposite sides are parallel and equal in length, but it does not necessarily have right angles; the angles can be acute or obtuse. Examples of such parallelograms include rhombuses and non-right-angled rectangles.
octagon
A rectangle or a square.
No parallel lines but a right angle triangle has perpendicular lines.
A square has 4 sides or lines that are equal in length and has 4 right angles.
1. All angles are right-angles. 2. All lines are parallel. 3. 2 pairs of 2 lines are the same length.
Perpendicular lines meet at right angles
rhombus
All of them. If its truly intersecting lines, they have to form right angles. All of them. If its truly intersecting lines, they have to form right angles.