Khan Academy
Khan Academy: Perimeter Word Problem: Skating Rink
Solve a word problem involving perimeter of a rectangle.
Khan Academy
Khan Academy: Perimeter: Introduction
Perimeter is the distance around the edge of a shape. Learn how to find the perimeter by adding up the side lengths of various shapes
Khan Academy
Khan Academy: Finding Perimeter When a Side Length Is Missing
Lindsay finds the perimeter of a figure when a side length is not given.
Khan Academy
Khan Academy: Finding Missing Side Length When Given Perimeter
Lindsay finds missing side lengths on polygons when given all other side lengths and the perimeter.
Khan Academy
Khan Academy: Perimeter and Unit Conversion
Sal converts metric unit to help solve a perimeter problem.
Khan Academy
Khan Academy: Challenging Perimeter Problem
Perimeter of rectangle covered by 9 non-overlapping squares. From 2000 American Invitational Math Exam.
Khan Academy
Khan Academy: Challenge Problems: Perimeter & Area
Three example problems involving perimeter and area.
Khan Academy
Khan Academy: Perimeter & Area
Perimeter is the distance around the outside of a shape. Area measures the space inside a shape. Learn how to calculate perimeter and area for various shapes.
Khan Academy
Khan Academy: Perimeter & Area of Composite Shapes
Sal finds perimeter and area of a non-standard polygon.
Sophia Learning
Sophia: Using Triangles to Examine Quadrilaterals: Lesson 2
This lesson demonstrates how to determine properties of quadrilaterals by using triangles. It is 2 of 5 in the series titled "Using Triangles to Examine Quadrilaterals."
Sophia Learning
Sophia: Using Triangles to Examine Quadrilaterals: Lesson 4
This lesson demonstrates how to determine properties of quadrilaterals by using triangles. It is 4 of 5 in the series titled "Using Triangles to Examine Quadrilaterals."
Sophia Learning
Sophia: Using Triangles to Find the Sum of Interior Angles: Lesson 2
This lesson demonstrates how to use triangles to determine the sum of the interior angles of a polygon. It is 2 of 5 in the series titled "Using Triangles to Find the Sum of Interior Angles."
Sophia Learning
Sophia: Using Triangles to Find the Sum of Interior Angles: Lesson 3
This lesson demonstrates how to use triangles to determine the sum of the interior angles of a polygon. It is 3 of 5 in the series titled "Using Triangles to Find the Sum of Interior Angles."
Sophia Learning
Sophia: Using Triangles to Find the Sum of Interior Angles: Lesson 4
This lesson demonstrates how to use triangles to determine the sum of the interior angles of a polygon. It is 4 of 5 in the series titled "Using Triangles to Find the Sum of Interior Angles."
Loyola University Chicago
Math Flix: Area and Perimeter Explanation
This QuickTime movie presents a problem to find the area of a multi-sided shape that requires an extended response. The teacher and student discuss how to work through it together to find the solution. As you watch and listen to the...
Loyola University Chicago
Math Flix: Perimeter Equal Perimeter Word Problem
This QuickTime movie introduces the basics of perimeter and an example of how to solve equal perimeter word problems. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept.
Loyola University Chicago
Math Flix: Area & Perimeter Writing Rectangle Riddles
This QuickTime movie explains how to write a rectangle riddle that uses the area and perimeter. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept.
Loyola University Chicago
Math Flix: Area & Perimeter Solving Rectangle Riddles
This QuickTime movie compares the area and perimeter of rectangles in the form of a riddle. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept.