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Shapes

Updated on April 4, 2013

What Are Shapes

Shapes are two or three dimensional figures that come in many sizes and looks. There are different formulas to solve perimeter, area, and more for each and every shape. Shapes have a different quantity of sides, and the number of sides per shape makes that shape special and gives it a special name. For example, a 5 sided figure is called a pentagon. I have been learning all about shapes for awhile now, and I want to share my knowledge about shapes. Learn all about the different shapes used in math now!

Types of Triangles

"Tri" is the Latin root meaning 3. A triangle has three sides, and there are different kinds of triangles. A triangle adds up to 180 degrees.

  1. Acute Triangle-a triangle with all angles that are acute angles.
  2. Right Triangle-a triangle with a right angle.
  3. Obtuse Triangle-a triangle with an obtuse angle.
  4. Equilateral Triangle- all angles and side measurements of a triangle are equal.
  5. Isosceles Triangle- two angles and side measurements of a triangle are equal.
  6. Scalene Triangle- none of the sides or angles are equal.

Pythagorean Theorem

The Pythagorean Theorem is a formula that is used to identify all of the sides of a right triangle. The Pythagorean Theorem only applies for Right Triangles, but it is an amazing method to use when trying to identify all three sides of a triangle. a squared+b squared=c squared is the formula used for a right triangle because the two legs of a triangle added together will always equal the hypothenuse. The hypothenuse is the side opposite of the right angle and is always the largest side. The two sides that meet together to form the right angle are the legs of the triangle. So, a is one lg, and b is the other leg. Those two legs squared equal the hypothenuse, or c squared.

Which Shape Is Your Favorite?

Which Shape Is Your Favorite?

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