Introduction to Types of Triangles

Introduction to Types of Triangles

Welcome to this video lesson on triangles. Today we’ll talk about equilateral, isosceles, and scalene triangles.

a) An equilateral triangle is a triangle with sides of equal length and every angle measuring 60°.

b) An isosceles triangle is a triangle with two sides of equal length and therefore two angles of equal measure, namely the angles opposite the two equal sides. A common isosceles triangle is the 45-45-90, where two angles are 45° and one is 90°. This is also a right triangle, since one of the angles is a right angle at 90°.

Remember, that no matter what, all the angles inside a triangle add up to 180°.

When finding the area of a triangle, The area of a triangle can be demonstrated as half of the area of a parallelogram which has the same base length and height, or the equation Area = 12bh here we can see how a triangle is only ½ of a parallelogram

I hope that helps. Thanks for watching this video lesson. Until next time, happy studying

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by Mometrix Test Preparation | Last Updated: February 18, 2019