CK-12 Geometry-Concepts

4.11. Equilateral Triangles http://www.ck12.org

4.11 Equilateral Triangles

Here you’ll learn the definition of an equilateral triangle as well as an important theorem about equilateral triangles.

What if your parents want to redo the bathroom? Below is the tile they would like to place in the shower. The
blue and green triangles are all equilateral. What type of polygon is dark blue outlined figure? Can you determine
how many degrees are in each of these figures? Can you determine how many degrees are around a point? After
completing this Concept, you’ll be able to apply important properties about equilateral triangles to help you solve
problems like this one.

Watch This

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URL: http://www.ck12.org/flx/render/embeddedobject/52624

CK-12 Foundation: Chapter4EquilateralTrianglesA

MEDIA

Click image to the left for use the URL below.

URL: http://www.ck12.org/flx/render/embeddedobject/1311

James Sousa: Constructing an Equilateral Triangle