perimeter   5 videos

• 

  Perimeter

  Geometry Geometry Building Blocks

  How to define perimeter and calculate it for squares, rectangles, and circles.

  perimeter of a square rectangle and circle
• 

  Area and Perimeter of Rectangles

  Pre-Algebra Introductory Geometry

  Overview of area and perimeter formulas for parallelograms and rectangles

• 

  Area and Perimeter of Triangles

  Pre-Algebra Introductory Geometry

  Understanding why the area of a triangle is 1/2 base times height

• 

  Area and Perimeter of Circles

  Pre-Algebra Introductory Geometry

  Vocabulary and formulas for the area of a circle

• 

  Area of Regular Polygons

  Geometry Area

  How to derive the formula to calculate the area of a regular polygon.

  area apothem side hexagon isosceles triangle perimeter equilateral equiangular