A square A parallelogram
A parallelogram has this description, but a parallelogram with 4 equal sides is more specifically called a rhombus.
A quadrangle with two pairs of equal sides is a square.
rectangle
A rectangle is defined as any shape with two pairs of equal sides and four equal angles.
A rectangle.
A square A parallelogram
There can be only one pair of perpendicular lines in an isosceles triangle when it is a right angled isosceles triangle. A non right angled isosceles triangle has no pairs of perpendicular lines.
A kite
Forces that come in pairs are called action-reaction pairs. This is based on Newton's third law of motion, which states that for every action, there is an equal and opposite reaction.
Yes, if they are equal to 180
It could be an arrowhead or kite.
Forces in pairs are called action and reaction forces, according to Newton's third law of motion. This law states that for every action, there is an equal and opposite reaction.
A parallelogram has this description, but a parallelogram with 4 equal sides is more specifically called a rhombus.
Yes
A quadrangle with two pairs of equal sides is a square.
A kite, or selected polygons with 5 or more sides.