Rectangle and squares

I.          Rectangles

a.       Understanding of Rectangles

·   A rectangle is a quadrilateral with two pairs of parallel sides.

·   A rectangle has two axis of symmetry and all four angles are right angles

·   A rectangle has 2^nd grade rotational symmetry

b.       Properties of a rectangle

·   A rectangle can fill to its frame in four ways

·   Opposite sides are equal in length (AB=CD and AD=BC)

·   Its two diagonal are equal in length (AC=BD)

·   Its two diagonal bisect each other (OA=OC and OB=OD)

II.           Squares

a.       Understanding of Squares

·   A Square is a quadrilateral with two pairs of parallel sides.

·   A Square has four axis of symmetry

·   A Square has 4^nd grade rotational symmetry

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b.       Properties of a Square

·   A Square can fill to its frame in eight ways

·   The length of each side of any square is equal

·   Its four diagonal are equal in length

·   Its four diagonals of a square are the bisectors and form four right angles.

All four angles are right angles