The Learning Edge

## GMAT Prep – Geometry – Triangles

Triangles are the most commonly-tested geometry topic on the GMAT. This free lesson goes through a real former GMAT problem solving question and teaches you how to apply an important rule concerning 45-45-90 right triangles to help find the area of a parallelogram. Test-taking strategies and miscellaneous considerations are discussed to help you Dominate the […]

## Area and Perimeter of Triangles: Examples (Basic Geometry Concepts)

Discover more at www.ck12.org: http://www.ck12.org/geometry/Area-and-Perimeter-of-Triangles/ Here you’ll learn how to find the area and perimeter of a triangle given its base and height. This video provides the student with a walkthrough of one or more examples from the concept “Area and Perimeter of Triangles”. This is part of CK-12â€™s Basic Geometry: Perimeter and Area. See […]

## Areas and Perimeters of Basic Geometry Shapes with Explanation of Heron’s Formula for Triangles

In this video, I explain and introduce areas and perimeters of basic geometry shapes: rectangles, triangles, circles, and trapezoids. I also explain Heron’s Formula for triangles. Video Rating: / 5

## Geometry – Relationships in Triangles

Here we dissect all the major components of the triangle, including median, centroid (sounds like a robot), angle bisectors, altitudes, and perpendicular bisectors. We practice on several examples of each. YAY MATH! Please visit yaymath.org Videos copyright (c) Yay Math