1. Lesson 1

1.3. Refresher

Mathematics 20-3 Module 4

Module 4: The Right Kind Of Triangles

 

Refresher

 

If you don’t know the answers to the questions in Are You Ready?, or if you require more information, work through the following activities to review right triangles, the Pythagorean theorem, complementary angles, and slope.

 

Pythagorean Theorem

  • This website has a good definition of the theorem and includes examples of how the theorem can be used.

  • The applet at the bottom will help you review the calculations involved in using the Pythagorean theorem.

This is a play button that opens Pythagorean theorem definition.

Complementary Angles

  • Review the definition of complementary angles and practise finding the angles by clicking the play button and then clicking Angles - Reasoning (Perspectives) under the heading Shape and Space.

This is a play button that opens Complementary Angles.

Roller Coaster

  • Use Roller Coaster to review positive, negative, and undefined slopes.

  • You can also use this media piece to review the slope formula.

This is a play button that opens Roller Coaster slope applet.

 

Go back to Are You Ready?, and try the questions again. Contact your teacher if you continue to have difficulty with the questions.