Khan Academy
Khan Academy: Area & Perimeter Word Problem: Dog Pen
Sal figures out the width of a dog pen.
Khan Academy
Khan Academy: Comparing Areas and Perimeters of Rectangles
Sal compares the areas and perimeters of rectangles to a given rectangle.
Khan Academy
Khan Academy: Intro to Quadrilaterals
Sal Khan discovers attributes and features of four-sided shapes, including parallelograms, rhombuses, rectangles, and squares. [8:06]
Sophia Learning
Sophia: Coordinate Geometry of Rectangles: Lesson 3
This lesson [7:55] will demonstrate how to use slope, midpoint, and distance formulas to determine from the coordinates of the vertices if a quadrilateral is a rectangle in a coordinate plane. It is 3 of 5 in the series titled...
Sophia Learning
Sophia: Coordinate Geometry of Rectangles: Lesson 1
This lesson [8:39] will demonstrate how to use slope, midpoint, and distance formulas to determine from the coordinates of the vertices if a quadrilateral is a rectangle in a coordinate plane. It is 1 of 5 in the series titled...
Expansion Learning
Expansion Learning: Basic Shapes (Part One)
Video provides students with an explanation of the basic shapes of square, rectangle, triangle, and circle.