Practical Problem: Where to Place the Braces
The Pythagorean Theorem is used to calculate where the braces should be placed to hang a store's sign so that the bottom falls six inches above the door.
Triangles: Using the Sum of the Angles Property
This clip explains how to use the sum of the angles property of triangles to find the measure of an unknown angle when the measure of the other two angles is known.
Triangles: Closer Look at Isosceles Triangles, A
This clip focuses on isosceles triangles, explaining that the equal sides are called the legs, while the remaining side is called the base. The clip notes that the base angles have the same measure, adding that, "
this feature of an isosceles trian...
Triangles: Triangles: Practical Problems
This clip consists of several practical problems which the student can solve by applying the Pythagorean Theorem and other facts about triangles that have been discussed in previous clips.
Triangles: Pythagorean Theorem, The
This clip introduces the Pythagorean Theorem, named for the Greek mathematician Pythagoras. In addition to explaining the theorem itself, the clip explains how it is commonly used, including as a way to determine if a triangle is a right triangle, a...
Triangles: Introduction to Triangles
This clip talks about the ways in which triangles are used in various professions. It also introduces the different types of triangles (equilateral, scalene and isosceles).
Area and Volume: Finding the Area of a Rectangle
This clip explains what a rectangle is and how to determine its area. "The formula is easy to remember," the clip states. "The area of a rectangle is equal to the length times the width." Three practical problems follow that are solved by utilizing ...
Area and Volume: Finding the Area of a Parallelogram or a Triangle
This clip explains that finding the area of a parallelogram is much like finding the area of a rectangle. "The area of a parallelogram equals the base times the height," the clip states. The clip further notes that, "
if we cut a parallelogram in h...
Area and Volume: Finding the Area of a Square
This clip explains that a square is a special kind of rectangle whose 4 sides are the same length. The clip states that the formula for finding the area of a square is: "Area equals s squared." The clip includes two practical problems.
Angles, Arcs and Sectors: Complementary and Supplementary Angles
This clip explains that any two angles that have a sum of 90 degrees are called complementary angles. The clip adds that knowing two angles are complementary allows us to find the measure of one angle when we know the measure of the other. The clip ...