* A quadrilateral is a 2-D shape with 4 straight sides and 4 angles.
* Examples of quadrilaterals include squares, rectangles, rhombuses, and trapezoids.
Define a rhombus.
* A rhombus is a quadrilateral with four equal sides and opposite angles that are equal.
* Rhombuses are also called equilateral quadrilaterals.
* The opposite sides of a rhombus are parallel to each other.
Show students examples of rhombuses.
* Show students pictures of rhombuses from different sources, such as books, magazines, or online.
* Ask students to identify the rhombuses in the pictures.
Explain the properties of a rhombus.
* Rhombuses have four equal sides.
* The opposite angles of a rhombus are equal.
* The opposite sides of a rhombus are parallel to each other.
* The diagonals of a rhombus are perpendicular to each other.
* The diagonals of a rhombus bisect each other.
Have students draw their own rhombuses.
* Give students a piece of paper and a pencil.
* Ask students to draw a rhombus.
* Have students label the sides and angles of their rhombuses.
Discuss the real-world applications of rhombuses.
* Rhombuses are used in a variety of real-world applications, such as:
* Architecture
* Design
* Engineering
* Math
* Science