TrianglesMenuWhat Is a Triangle?What Is a Triangle?A triangle is a polygon, made up of three edges and three vertices. Learn more about triangles in this video, which explains how to label their different parts.UnderstoodContinue1Angle Sum of TriangleActivity Set 12Acute, Obtuse and RightActivity Set 13Equilateral, Isosceles and ScaleneActivity Set 14PerimeterActivity Set 15Formula for AreaCalculate the AreaActivity Set 16Boss Battle

What Is a Triangle?A triangle is a polygon, made up of three edges and three vertices. Learn more about triangles in this video, which explains how to label their different parts.UnderstoodContinue