1. Lesson 4

1.9. Lesson 4 Summary

Mathematics 20-3 Module 4

Module 4: The Right Kind Of Triangles

 

Lesson 4 Summary

 

This is a photo of the south train bridge in Saskatoon.

iStockphoto/Thinkstock

 

Saskatoon, named after the Nehiyawak word for the purple berries found in abundance on the Prairies, is often called The City of Bridges. Seven major bridges span the South Saskatchewan River, which flows through the city.

 

The railroad bridge in the photograph incorporates in its construction multiple right triangles. The triangle is a geometric shape used in design for strength and stability.

 

Try your hand at bridge building. Using your favourite search engine, find a “build a bridge” activity and see what is required to properly build a bridge.

 

In this lesson you investigated how more than one right-angle triangle appears in a variety of applications. Right-angle triangle trigonometry was your bridge to understanding.