5 videos
2 skills
Not all things with four sides and 90 degree angles are squares or rectangles! Sometimes the angles in these 4-sided shapes are less than (or greater than) 90 degrees, causing them to have a slightly odd shape. These are called quadrilaterals and come in a few different varieties. In this tutorial, you'll learn about them. Common Core Standards: 5.G.B.3, 5.G.B.4

Intro to quadrilateral

VIDEO 8:24 minutes
Sal introduces the term quadrilateral as well as trapezoid, parallelogram, rectangle, rhombus, and square.

Quadrilateral properties

VIDEO 5:07 minutes
Sal discusses the properties of quadrilaterals, parallelograms, trapezoids, rhombuses, rectangles, and squares.

Kites as a geometric shape

VIDEO 5:38 minutes
Sal discusses a special type of quadrilateral, the kite.

Quadrilateral types

VIDEO 2:49 minutes
Sal identifies quadrilaterals as kites, trapezoids, parallelograms, rhombuses, rectangles, and squares.

Quadrilateral types

Identify quadrilaterals based on pictures or attributes. Quadrilaterals included are parallelograms, rhombuses, rectangles, and squares.

Classifying quadrilaterals

VIDEO 2:28 minutes
Sal classifies quadrilaterals by their properties (such as parallel sides).

Properties of shapes

Identify and compare shapes based on their attributes. Shapes include triangle types, quadrilateral types, pentagons, and hexagons.