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PSSA Vocabulary 7&8
PSSA Vocabulary (Grades 7&8)
| Question | Answer |
|---|---|
| Acute triangle | A triangle that has each angle measuring less than 90° |
| Adjacent angles | Angles that share a common side and common vertex and do not overlap |
| Alternate exterior angles | A pair of angles located outside a set of parallel lines and on opposite sides of the transversal |
| Alternate interior angles | A pair of angles located between a set of parallel lines and on opposite sides of the transversal |
| Box-and-whisker plot | A graphic method for showing a summary of data using median, quartiles and extremes of data |
| Complementary angles | Two angles whose measures, when added together, equal 90° |
| Compound event | An event made up of two or more simple events |
| Coordinate plane/graph | A two-dimensional system in which the coordinates of a point are its distances from both a horizontal and a vertical line called the axes. |
| Ordered pairs | The first number, called the x-coordinate, designates the distance along the horizontal axis;The second number, called the y-coordinate, designates the distance along the vertical axis |
| Origin | The point at which the two axes intersect has the coordinates (0,0) |
| Corresponding angles (1) | When a transversal intersects two lines, corresponding angles are on the same side of the transversal and on the same side of the given lines |
| Corresponding angles (2) | Angles in the same relative position in similar or congruent figures |
| Equilateral triangle | A triangle whose sides are all the same length |
| Experimental probability | A statement of probability based on the results of a series of trials |
| Independent events | Two events in which the outcome of one event does not affect the outcome of the other event |
| Isosceles triangle | A triangle that has exactly two congruent sides |
| Linear function | An equation whose graph in a coordinate plane is a straight line |
| Mutually exclusive events | Two events that cannot occur at the same time |
| Net | A two-dimensional shape that can be folded to create a three-dimensional figure |
| Obtuse triangle | A triangle with one angle that measures more than 90º |
| Order of operations | Rules describing what sequence to use in evaluating expressions;(1) Perform operations in grouping symbols, (2) Evaluate exponents, (3) Multiply or divide from left to right, (4) Add or subtract from left to right |
| Perfect square | The product of an integer multiplied by itself |
| Permutation | Possible orders, or arrangements of a set of items;Placing these items in a different order results in a new permutation |
| Prism | A three-dimensional solid that has two congruent and parallel faces that are polygons;The remaining faces are rectangles; They are named by their bases |
| Proportion | An equation showing that two ratios are equal |
| Pythagorean theorem | A formula for finding the length of a side of a right triangle when the lengths of two sides are given;(a~squared + b~squared = c~squared) |
| Scalene triangle | A triangle with no congruent sides |
| Scatterplot | A graph with points plotted to show a relationship between two variables |
| Scientific notation | A form of writing very large or very small numbers using a number greater than or equal to 1 and less than 10 multiplied by a power of 10 |
| Stem-and-leaf plot | A data display that shows groups of data arranged by place value |
| Supplementary angles | Two angles whose measures, when added together, equal 180° |
| Surface area | The sum of the areas of all of the faces of a three-dimensional figure |
| Theoretical probability | A statement of the probability of an event without doing an experiment or analyzing data;P (event) = number of favorable outcomes divided by number of possible outcomes. |
| Vertical angles | A pair of opposite congruent angles formed when two lines intersect |
Created by:
pstoughton
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