Instructional Video
Khan Academy

Khan Academy: Triangles: Area of an Equilateral Triangle

9th - 10th Standards
This video tutorial explores finding the formula for the area of an equilateral triangle with side length of s.
Instructional Video
Sophia Learning

Sophia: Equilateral Triangle Interior Angles Practice Problems: Lesson 4

9th - 10th
This lesson will provide practice problems that involve solving for unknown angle and side measures of equilateral triangles. It is 4 of 5 in the series titled "Equilateral Triangle Interior Angles Practice Problems."
Instructional Video
Sophia Learning

Sophia: Equilateral Triangle Interior Angles Practice Problems: Lesson 2

9th - 10th Standards
This lesson will provide practice problems that involve solving for unknown angle and side measures of equilateral triangles. It is 2 of 5 in the series titled "Equilateral Triangle Interior Angles Practice Problems."
Instructional Video
Sophia Learning

Sophia: Equilateral Triangle Interior Angles Practice Problems: Lesson 3

9th - 10th Standards
This lesson will provide practice problems that involve solving for unknown angle and side measures of equilateral triangles. It is 3 of 5 in the series titled "Equilateral Triangle Interior Angles Practice Problems."
Instructional Video
Sophia Learning

Sophia: Equilateral Triangles: Lesson 5

7th - 9th Standards
This lesson will prepare you to distinguish an equilateral triangle based on the sides of a triangle. It is 5 of 8 in the series titled "Equilateral Triangles."
Instructional Video
Sophia Learning

Sophia: Equilateral Triangles

7th - 8th Standards
This lesson will prepare you to distinguish an equilateral triangle based on the sides of a triangle.
Instructional Video
Sophia Learning

Sophia: Equilateral Triangles

7th - 9th Standards
This lesson will prepare you to distinguish an equilateral triangle based on the sides of a triangle.