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This worksheet introduces the basic concepts of triangles.
Six Different Types of Triangles
All About Shapes - What is a Triangle?
All About Shapes - What is a Pentagon?
All About Shapes - What is a Circle?
Number Blocks: First Ten Triangle Numbers
Different Types of Triangles: Equilateral, Isosceles, Scalene, Right, Acute, and Obtuse Triangles
Number Blocks: Triangular Numbers
All About 3D Shapes - What is a Sphere?
Different Types of Triangles: Equilateral, Isosceles, Scalene, Right, Acute, and Obtuse Triangles