This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions on the topic of Triangles. Each definition is a downloadable image.

This is part of a collection of definitions related to triangles and related concepts.

Archer Fish are amazing hunters, spraying water on insect prey to knock them into the water.

In this Algebra Application, students study the life cycles of 13- and 17-year cicadas, as well as the populations of bird predators.

This set of tutorials provides 26 examples of how to find the length of a side of a triangle using given angle or side measurements.

In this Slide Show, we show how to construct an isosceles triangle. This presentation requires the use of the TI-Nspire iPad App. Note: the download is a PPT.

In this Slide Show, explore the properties of parallel and perpendicular lines. Use a slider to define the slope and then graph parallel and perpendicular lines linked to this slider.

In this Slide Show, we show how to construct the perpendicular bisectors of the three sides of a triangle to show they intersect at a single point. This presentation requires the use of the TI-Nspire iPad App. Note: the download is a PPT.

In this Slide Show, do a hands-on geometry activity to measure π. Note: The download is a PPT file.

In this TI-Nspire Activity, use the Geometry and Graphing Tools to explore the ratio of Circumference to Radius as a linear function. 

In this Slide Show, learn how to use the TI-Nspire App to construct an isosceles triangle. Note: The download is a PPT file.

This interactive crossword puzzle tests knowledge of key terms on the topic of the graphs of Parallel and Perpendicular Lines.

This interactive crossword puzzle tests knowledge of key terms on the topic of triangles.

Use this math game to review triangles. This is a Memory-style game in which students must remember the location of pairs of identical images.

In this Math Riddles Game, have your students review vocabulary around the topic of triangles.

Solve an interactive word search puzzle on the topic of Triangles.

Solve an interactive word search puzzle on the topic of Triangles.

Solve an interactive word search puzzle on the topic of Triangles.

Solve an interactive word search puzzle on the topic of Triangles.

Solve an interactive word search puzzle on the topic of Triangles.

This is from a collection of triangular shapes. They come labeled and unlabeled.

This is from a collection of triangular shapes. They come labeled and unlabeled.

This is from a collection of triangular shapes. They come labeled and unlabeled.

This is from a collection of triangular shapes. They come labeled and unlabeled.

This is from a collection of triangular shapes. They come labeled and unlabeled.

This is from a collection of triangular shapes. They come labeled and unlabeled.

This is from a collection of triangular shapes. They come labeled and unlabeled.

This is from a collection of triangular shapes. They come labeled and unlabeled.

This is from a collection of triangular shapes. They come labeled and unlabeled.

This is from a collection of triangular shapes. They come labeled and unlabeled.

This is from a collection of triangular shapes. They come labeled and unlabeled.

This is from a collection of triangular shapes. They come labeled and unlabeled.

This is from a collection of triangular shapes. They come labeled and unlabeled.

This is from a collection of triangular shapes. They come labeled and unlabeled.

This is from a collection of triangular shapes. They come labeled and unlabeled.