1. All Triangles= 180 degrees

2. Right Triangle One angle is 90  (a right angle) Right Triangle One angle is 90  (a right angle) Scalene No sides or angles are Equal Scalene No sides or angles are Equal Triangles

3. Isosceles 2 sides and angles are Equal Isosceles 2 sides and angles are Equal Equilateral All sides and angles are Equal Equilateral All sides and angles are Equal Triangles

5. Acute Angle An angle LESS than 90 degrees

6. An angle Greater than 90 degrees. Obtuse Angle

7. Right Angle An angle that is EXACTLY 90 degrees

8. Two angles whose measures have a sum of 180° Supplementary Angles

9. Two angles whose measures have a sum of 90° Complimentary Angles

10. Two lines that intersect to form four right angles Perpendicular Lines

11. Intersecting Lines Two lines that cross at one point

12. NEVER MEET

13. Diameter Radius Diameter: A line segment that passes through the circle and has endpoints on the circle Radius : A line segment with one endpoint at the center of the circle and the other endpoint on the circle

15. Place Value Chart

16. .50 50%.75 75%.25 25% Percents, Decimals, and Fractions

18. Similar Figures : Figures with same shape, but NOT same size. Congruent Figures: Figures with the same size and shape

19. A line that divides a shape EXACTLY in half. Line of Symmetry

20. A polygon with four sides

21. A closed plane figure formed by three or more line segments. Polygon

22. A solid figure that has the shape of a round ball. All points are the same distance from the center

23. Perimeter: The distance around a figure (add up all the sides)

24. 2 3 Numerator (TOP NUMBER) Denominator (BOTTOM NUMBER)

25. The smallest number, other than zero, that is a common multiple of two or more numbers Example: multiples of 6 : 6, 12, 18, 24, 30, 36 multiples of 9 : 9, 18, 27, 36, 45, 54 The LCM of 6 and 9 is 18

26. The greatest factor that two or more numbers have in common Example: 18 : 1, 2, 3, 6, 9, 18 30 : 1, 2, 3, 5, 6, 10, 15, 30 6 is the GCF of 18 and 30

27. Commutative Property The property that states that when the order of addends or factors is changed, the sum or product is the same Examples: 9 + 4 = 4 + 9 6 x 3 = 3 x 6 Associative Property The property that states that the way addends are grouped or factors are grouped does not change the sum or the product Examples: 12 + (5 + 9) = (12 + 5) + 9 (9 x 8) x 3 = 9 x (8 x 3)

28. Add  Altogether  Plus  Sum  Total  Increase  More than Subtract  Minus  Difference  Decrease  Less than  Have left  Fewer  How many more Multiply  Times  Product of  Of  Twice (  2 ) Divide  Quotient of  How often  Per  How much for each? Words That Mean…

29. Parentheses ( ) Exponents x 2 Multiplication X and Division ÷ Addition + and Subtraction - Please Excuse My Dear Aunt Sally

30. 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79. 83, 89, 97, 101, 103, 107, 109, 113