Students will learn what the SSS congruence theorem says, and see a proof using rigid transformations.
Students should also learn how Euclid proved the SSS congruence theorem. His proof can be seen by reading this, then this.
After that, students will learn how to use the SSS theorem.
Watch these Brian McLogan videos:
There might be more videos on using the SSS congruence theorem here.
Conclude by giving your students these challenges:
- Doughnut Percents by NRICH
- Making Shapes by NRICH
- Pocket Money by NRICH
- 2014 AMC 8, Problem 24
- 2004 AMC 8, Problem 2