Area of a Triangle

Contributor: Alison Weiss. Lesson ID: 10965

Finding the area of a triangle is almost as easy as finding the area of a quadrilateral; there is just one more step. Videos and fun online practice show you the angles of finding a triangle's area!


Geometry, Plane Geometry (2D)

learning style
Auditory, Visual
personality style
Lion, Beaver
Grade Level
Intermediate (3-5), Middle School (6-8)
Lesson Type
Quick Query

Lesson Plan - Get It!

  • Do you think you can find the area of any triangle?

Watch How to Find the Area of a Triangle: The Easy Way!:

In the video above, you learned that a triangle is half of a quadrilateral.

It would be helpful to understand how to find the area of a triangle. This can be done with a little bit more information, and even some examples and practice!

Go to MATH is FUN to learn more about the Area of Triangles Without Right Angles.

If you need help, just look at the rest of the "Area of Triangles" page for clues and tips!

Before you move on, let's see what you know about finding the area of triangles.

Great! You understand the formula for finding the area of a triangle!

Let's see if you can identify the base and height of triangles! (You can click on the + sign to make the images larger.)

Visit the Got It? section to practice using the formula to find the area of triangles!

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