1. { Exam Study guide Pre-algebra

13. Vocabulary:

14.  Congruent: means the same  Corresponding angles: A pair of angles that lie on the same side of the transversal and are in corresponding positions.  Dilation: The increase or decrease in the size of a figure.  Hypotenuse: The side opposite of the right angle in a right triangle.  Integers: Whole numbers and their opposites.  Interior Angles: angles on the inside of two lines cut by a transversal.  Irrational Numbers: Any real number that cannot be written as a fraction; it is infinite and non-repeating.  Legs: two sides that form the right angle in a right triangle.  Like terms: terms with the same variable.  Numerator: the top of a fraction  Perfect Square: its value is an integer and it’s a rational number.

15.  Proportion: An equation that states that two ratios are equivalent.  Radical: symbol used to represent square roots.  Rational numbers: any real number that can be written as a fraction.  Real numbers: both rational and irrational numbers  Reciprocal: when you flip the numerator and the denominator.  Reflection: a transformation that flips a figure over a line of reflection.  Rotation: a transformation that turns a figure about a point.  Scale factor: the amount that you are increasing or decreasing a figure by.  Scientific notation: a way to abbreviate very large or very small numbers using powers of ten.  Sphere: a 3-d figure with all points the same distance from the center.  Supplementary: two angles whose measures have a sum of 180 degrees.  Translation: a transformation that slides a figure on a coordinate plane.

16.  Good Luck!!!