Symmetry of Quadrilaterals and Intro to Regular Polygons

that is closed

and has straight lines.

is a polygon

that has four sides.

a line segment that goes from one vertex (corner) to another.

Rectangle

Parallelogram

Rhombus

Square

opposite sides are congruent

opposite sides are parallel

is a parallelogram

with four right angles (90 degrees)

is a parallelogram

with four congruent sides

is a rhombus

with four right angles (90 degrees)

A line that reflects a figure onto itself

2 lines of symmetry

a traditional parallelogram has no lines of symmetry

a traditional rhombus has 2 lines of symmetry.

has four lines of symmetry.

A figure that can be carried onto itself by a rotation is said to have rotational symmetry.

A rectangle lands onto itself twice during a full rotation.

First at 180°

Second at full rotation (360°)

refer to the video on google meets.

A parallelogram lands onto itself twice during a full rotation.

First at 180°

Second at full rotation (360°)

A rhombus lands onto itself twice during a full rotation.

First at 180°

Second at full rotation (360°)

A square lands onto itself four times during a full rotation.

First at 90°

Second 180°

Third at 270°

and at full rotation at 360°