1. Bellringer/Challenge Problem
We want to create a shelf for our bedroom. We have 3 pieces of wood
We need to make a right triangle in order for the shelf to be even
Can we make an even shelf with the wood we currently have?
6 in
8 in
9 in

2. Crazy Square Combinations
2x2, 3x3, 4x4 ?
5x5, 6x6, 9x9 ?
3x3, 6x6, 9x9 ?
12x12, 13x13, 17x17?
10x10, 17x17, 21x21?
Your own combination
Obtuse Triangle
Acute Triangle
Obtuse Triangle
Acute Triangle
Obtuse Triangle

3. Using Pythagorean Theorem to Prove if Triangles are Right, Acute, or Obtuse…
Right Triangles: a2 + b2 = c2
Acute Triangles: a2 + b2 > c2
Obtuse Triangles: a2 + b2 < c2
Test it out: ; ;