CW Geometry slides

1. 4.3 Triangle Inequalities pg. 213
Geometry warm-up: pg. 218 # 19-23
19. a=52¡, b= 38¡, c=110¡, d=35¡

2. 20. a=90¡, b=68¡, c=112¡, d=112¡, e=68¡, f=56¡, g=124¡, h=124¡
21. ABE
22. FNK
23. cannot be determined

3. Triangle Inequalities:
 Can you form a triangle using
ANY three lengths for the sides?
 How do the angle measures
relate to the length of the sides?

4. Triangle Inequality conjecture:
The sum of the lengths of any two sides of a triangle
is greater that the length of the third side.
Think about it! If two sides add up to a smaller number
than the third side then the sides won't meet!
5
2
8
Side lengths: 2, 5, 8------- 2+5=7 which
is less than 8