Free Math Games & Activities for Kids
A rectangle is a quadrilateral! More Rectangle Facts:
(a) Opposite sides are equal and parallel.
(b) All angles are equal to 90 degrees.
(c) The diagonals are equal and bisect each other.
(d) The intersection of the diagonals is the circumcenter.
(e) Any two adjacent angles add up to 180 degrees.
(f) Lines joining the mid points of the sides of a rectangle in an order form a rhombus of half the area of the rectangle.
(g) The sum of the four exterior angles is 4 right angles.
(h) The sum of the four interior angles is 4 right angles.