All About Shapes - What is a Triangle?

This worksheet introduces the basic concepts of triangles.

Six Different Types of Triangles

Different Types of Triangles: Equilateral, Isosceles, Scalene, Right, Acute, and Obtuse Triangles

Six Different Types of Triangles

All About Shapes - What is a Rectangle?

All About Shapes - What is a Triangle?

All About Shapes - What is a Pentagon?

Associate 3D Shapes with Everyday Objects

Shape Recognition and Counting

All About Shapes - What is a Circle?

Shape Recognition and Coloring

Number Blocks: Triangular Numbers

Number Blocks: Triangular Numbers

Number Blocks: First Ten Triangle Numbers

All About Shapes - What is a Rectangle?

All About Shapes - What is a Triangle?