Directions: Fill in the empty blanks so that you create a triangle whose Cos Θ = √2/2. You can use whole numbers 1 through 9, but can only use a number once: (5, 4), (__,__) and (__,__)

Directions: Using the numbers 1 to 9, using each number only once, complete the following statement:

___ rows and ___ columns create a rectangle of ___ units

- What different possibilities will your students come up with?
- How many of these statements can you create?
- How would increasing the interval from 1 to 19 change the problem?

Draw and name a shape that has the following characteristics:

- Has 3 sides
- Has 4 sides
- Has 5 sides
- Has 6 sides
- Has no sides