Examples for

# Common Core Math: Grade 4: Geometry

In fourth grade, students formally define several new types of two-dimensional objects such as points, lines, rays and angles. Students identify and draw parallel and perpendicular lines, find lines of symmetry of two-dimensional figures and categorize angles as right, acute or obtuse. Students then classify shapes based on shared geometric properties. In particular, students recognize the category of right triangles as three-sided figures containing a right angle.

### Common Core Standards

Get information about Common Core Standards.

#### Look up a specific standard:

#### Search for all fourth grade standards in a domain:

### Defining Shapes

Classify shapes based on defining attributes.

#### Describe a category of shapes (CCSS.Math.Content.4.G.A.2):

#### Compare properties of shapes (CCSS.Math.Content.4.G.A.2):

### Geometric Objects

Define and visualize two-dimensional geometric objects.