1. Tues, Feb. 10, 2014 Mathematical practice -- reason Triangles Classification review: RightEquilateralIsoscelesScalene 90 degree all sides equal 2 sides equal no sides equal angle

2. Triangle Inequality The sum of the two smallest sides must be larger than the longest side

3. Triangle Angle Measures The sum of all angles in a triangle add to 180 degrees EVERY TIME

4. Tues, Sept. 9, 2014 Mathematical practice -- reason Scale Factor For length Multiply by scale factor (scale factor is 3) 6 2 18 6

5. Scale Factor For area Multiply by scale factor squared (3 squared is 9) 6 2 Area is 12 18 6 Area is 108

6. Tues, Sept. 9, 2014 Mathematical practice -- reason Circle Relationships Perimeter Diameter Radius

7. Circle Relationships Perimeter Diameter Radius Perimeter Diameter Radius x 2 = π = Diameter Perimeter = 2πr Radius = ½ Diameter

8. Angle Pairs SupplementaryTwo angles add to 180° complementaryTwo angles add to 90°

9. Angle Pairs adjacent Common side and common vertex (not overlapping) vertical the angles opposite each other when two lines cross