Introduction to Types of 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