Instructional Video6:15
Curated Video

Common Types of Triangles

K - 8th
Mr. Addit defines the terms; right triangle, hypotenuse, legs, equilateral, equiangular, isosceles, scalene, equiangular, obtuse, and acute.
Instructional Video1:02
Brian McLogan

How to label a triangle as acute obtuse, right or equiangular

12th - Higher Ed
👉 Learn how to classify triangles. A triangle is a polygon with three sides. Triangles are classified on the basis of its angles or on the basis of its side lengths. The classification of triangles on the bases of its angles are: acute,...
Instructional Video3:23
Brian McLogan

CCSS What are equiangular, equilateral and regular polygons

12th - Higher Ed
CCSS What are equiangular, equilateral and regular polygons
Instructional Video
Sophia Learning

Sophia: Properties of Equilateral Triangle and Takin' It 2 the Streets

9th - 10th Standards
Use examples to solve for the angles of equilateral triangles in a PowerPoint presentation. Includes video. [4:18]
Instructional Video
Sophia Learning

Sophia: Regular Polygons Tutorial

6th - 8th Standards
In this video tutorial, students will determine if a polygon is regular by examining the sides and angles for congruency. Check understanding by the assessment. [2:06]
Instructional Video
Sophia Learning

Sophia: Regular Polygons Tutorial

6th - 8th
This video tutorial demonstrates how to use the terms equiangular and equilateral to determine if a polygon is regular or irregular. Check understanding with the assessment. [6:07]
Instructional Video
Sophia Learning

Sophia: Properties of Equilateral Triangles

9th - 10th
Equilateral triangles are explored in this learning tutorial, which includes several videos [4:18; 4:18; 3:18] and a PowerPoint presentation. The lesson includes an introduction of equilateral triangles and their key characteristics....