This document discusses the importance of studying similar and congruent triangles. It notes that triangles are rigid shapes that make structures like the Eiffel Tower strong. The document also explains that similar triangles were used to calculate distances thousands of years ago and that triangles allow communication with satellites today.

1. Why SSS is important
By Louise Callanta
1/27/2015 1Louise Callanta

2.  California Content Standards
 4.0 Students prove basic theorems involving
congruence and similarity.
 5.0 Students prove that triangles are
congruent or similar, and they are able to use
the concept of corresponding parts of
congruent triangles.
1/27/2015 2Louise Callanta

3. 1/27/2015 3Louise Callanta

4. This shape is rigid. This shape is not rigid
1/27/2015Louise Callanta 4

5. This shape is rigid. This shape is not rigid
1/27/2015Louise Callanta 5

6.  Triangles are rigid
objects.
 Other shapes are
not rigid.
 The Eiffel Tower is
comprised of many
triangles because
of the their
strength.
 It is their rigidity
that makes them
strong 1/27/2015Louise Callanta 6

7. This was accurate within 5 miles!!!
1/27/2015Louise Callanta 7

8.  Triangles allow us to communicate with
satellites
 Similar Triangles were used to calculated
distances thousands of years ago.
 They are everywhere! Try and find some for
yourself!
1/27/2015Louise Callanta 8

9.  Moon Landing:
 http://www.archive.org/details/Apollo11MoonLa
nding
 Eiffel Tower Image:
 http://www.travlang.com/blog/wp-
content/uploads/2010/04/Eiffel_Tower_12.jpg
 Eiffel Tower close up image:
 http://www.worldofstock.com/slides/ADT1820.j
pg
1/27/2015Louise Callanta 9