Sophia Learning
Sophia: Finding a Missing Coordinate Using the Distance Formula
This video lesson demonstrates how to use the distance formula to find a missing coordinate. Students can check their understanding with an assessment.
Sophia Learning
Sophia: Inverse Sine
This video tutorial introduces and provides examples of the inverse sine function. The lesson demonstrates how to use the inverse sine ratio to solve for an unknown angle in a right triangle.
Sophia Learning
Sophia: Pre Algebra: Indirect Measurement
Indirect measurement using shadows and proportions is explored in this video lesson. The tutorial includes a very detailed example of the concept.
Sophia Learning
Sophia: Pythagorean Theorem and Right Triangles
Determine if the Pythagorean theorem can be used with triangles that are not right triangles. Assess learning with a quiz.
Sophia Learning
Sophia: Special Right Triangles
Special right triangles are investigated in this video tutorial. The lesson provides background knowledge and two videos that show the relationships of the sides in special right triangles and practice problems to test students'...
Sophia Learning
Sophia: The Pythagorean Theorem
Determine how to find the missing side length or the hypotenuse of a right triangle using the Pythagorean theorem. Check understanding with a quiz.
Sophia Learning
Sophia: Triangle Congruence Theorem (Hl)
This video lesson introduces and provides examples of the Hypotenuse-Leg Triangle Congruence Theorem. Students can check their understanding with an assessment.
Sophia Learning
Sophia: Area of a Trapezoid
This video lesson demonstrates how to solve for the area of a trapezoid. The tutorial includes detailed examples. Students can check their understanding with an assessment.
Sophia Learning
Sophia: Special Right Triangles
Special right triangles are explored in this video tutorial. The lesson provides four videos that explain the side ratios for 45-45-90 and 30-60-90 triangles along with real-world examples involving each type of triangle.
Math Antics
Math Antics: Triangles
Gain a basic understanding of triangles by watching easy to understand video tutorial. Additional resources are available as part of a paid subscription service. [7:39]
Art of Problem Solving
Art of Problem Solving: Angles in a Triangle Part 2
Video tutorial uses problems to reinforce understanding of angles in a triangle. (Part 2) [6:23]
Loyola University Chicago
Math Flix: Pythagorean Theorem Puzzle
This QuickTime movie uses a tangram-like puzzle to help understand the Pythagorean Theorem. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept.
Khan Academy
Khan Academy: Right Triangle Geometry Harder Example
The video from Khan Academy provides practice questions for the SAT. Students will watch Sal work through a harder right triangle trigonometry problem.
Sophia Learning
Sophia: Pythagorean Theorem
We introduce the Pythagorean Theorem and show how it can be used to help solve real world problems. Student watch a video tutorial and then take an online quiz.
Sophia Learning
Sophia: Pythagorean Theorem
We introduce the Pythagorean Theorem and show how it can be used to help solve real world problems. Student watch a video tutorial and then take an online quiz.
Shmoop University
Shmoop: Pythagorean Theorem
This resource provides a short video about Pythagorean Theorem. [1:39]