Loyola University Chicago
Math Flix: Pythagorean Theorem: Introduction
This video [7:25] provides an excellent introduction to the Pythagorean Theorem. As you watch and listen to the teacher and student interact, it helps clarify the thinking behind applying this concept.
Sophia Learning
Sophia: Sine and Cosine: Lesson 7
The differences and similarities of the graphs for sine and cosine are discussed here. This lesson is 7 of 7 in the series titled "Sine and Cosine."
Sophia Learning
Sophia: The Diagonal of Rectangular Objects
In this lesson, students will learn the Diagonal of Rectangle Objects by using the Pythagorean Theorem. Students can watch a video tutorial to learn about the concept.
Virtual Nerd
Virtual Nerd: What Is the Sine Ratio?
The sine ratio is very useful when dealing with right triangles. This tutorial investigates what the sine ratio is and how to use it to find angle measurements in a right triangle. [6:49]
Virtual Nerd
Virtual Nerd: How Do You Solve a Problem Using an Angle of Elevation?
Tutorial demonstrates how to use the tangent ratio to find the height of a hill. [5:12]
Virtual Nerd
Virtual Nerd: What Are the Legs and Hypotenuse of a Right Triangle?
Features an intoduction to the names for the different parts of a right triangle. [2:13]
CK-12 Foundation
Ck 12: Elem Math: Overview of Special Triangles
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview on how to find missing angles in triangles.
CK-12 Foundation
Ck 12: Elem Math: Overview of Triangle Classifications
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview on how to classify triangles.
Virtual Nerd
Virtual Nerd: How Do You Classify Triangles?
This tutorial provides practice in classifying triangles which is useful when figuring out how to solve for various sides and angles. [7:15]
Khan Academy
Khan Academy: Triangles: 45 45 90 Triangle Side Ratios
Showing the ratios of the sides of a 45-45-90 triangle in this short video.
Khan Academy
Khan Academy: Triangles: 30 60 90 Triangle Side Ratios Proof
This video explores proving the ratios between the sides of a 30-60-90 triangle.
Khan Academy
Khan Academy: Triangles: 45 45 90 Triangles
Students are provided an introduction to 45-45-90 triangles by watching a video tutorial.
Khan Academy
Khan Academy: Worked Examples: Geometry: Pythagorean Theorem, Area
Students watch a video tutorial to learn how to solve area problems of composite figures using the Pythagorean Theorem.
Khan Academy
Khan Academy: Trig to Solve the Sides and Angles of a Right Triangle
Worked example using trigonometry to solve for the lengths of the sides of a right triangle given one of the non-right angles.
Khan Academy
Khan Academy: Triangles: Another Pythagorean Theorem Proof
Students explore the Pythagorean Theorem by exploring a visual proof of the Theorem as they watch a video tutorial.
Sophia Learning
Sophia: Calculating the Area of a Triangle
This video lesson demonstrates how to calculate the area of a triangle. It includes detailed examples including ones that use the Pythagorean Theorem. Students can check their understanding with an assessment. [10:43]
Sophia Learning
Sophia: Identifying Trigonometric Ratios From a Right Triangle
Use a right triangle to identify the six trigonometric ratios such as cosine, sine, tangent, co-secant, secant, and cotangent. Assess learning with a quiz. [6:54]
Sophia Learning
Sophia: Inverse Cosine
Solve for an unknown angle of a right triangle using the inverse cosine. Assess learning with a quiz.
Sophia Learning
Sophia: Inverse Tangent
Solve for an unknown angle of a right triangle using the inverse tangent. Take a quiz to assess learning.
Sophia Learning
Sophia: Rectangle Practice Problems
This video lesson describes the characteristics of rectangles and provides examples of how to find area, perimeter, diagonals, and angle measurements. [7:00]
Sophia Learning
Sophia: Slant Height of a Cone
This video lesson demonstrates how to find the slant height of a right cone. Students can check their understanding with an assessment. [6:18]
Sophia Learning
Sophia: Slant Height of a Pyramid
This video lesson demonstrates how to use the Pythagorean Theorem to find the slant height of pyramid.
Sophia Learning
Sophia: The Hypotenuse
In this video tutorial, the instructor defines and explores the hypotenuse of a right triangle. Students can check their understanding with a quiz. [1:35]
Sophia Learning
Sophia: Area of a Rhombus
This video lesson demonstrates two ways for calculating the area of a rhombus. Students can check their understanding with an assessment. [4:55]