# Quadrilaterals

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

### Quadrilateral overview

VIDEO
8:24 minutes

"Quad" means "four" and "lateral" means "line." A quadrilateral is literally a shape with four sides (lines) and four angles. Let's learn the difference between concave and convex quadrilaterals as well as trapezoids, parallelograms, and ...

### Quadrilateral properties

VIDEO
5:07 minutes

How about this: we are given a 4-sided shape and asked to determine whether its properties qualify it to be called a quadrilateral (or category of quadrilaterals). Check it out.

### Quadrilaterals: kites as a geometric shape

VIDEO
5:38 minutes

Is a kite a quadrilateral? Is it a rhombus? A parallelogram? Let's find out.

### Quadrilaterals: find the type exercise

VIDEO
2:49 minutes

Take a look at the given data and determine what type of quadrilateral we have.

### Quadrilateral types

PRACTICE PROBLEMS

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

### Quadrilaterals: classifying shapes

VIDEO
2:28 minutes

Let's see how well you classify shapes by determining what properties match each kind of quadrilateral.

### Properties of shapes

PRACTICE PROBLEMS

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