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PSSA Vocab-PVSD
PSSA Vocab - PVSD 11th&12th grade
| Question | Answer |
|---|---|
| Altitude of a triangle | a line drawn inside a triangle from the base to the opposite angle. It is perpendicular to the base. |
| analytical geometry | geometry that is graphed on the coordinate plane and uses mostly algebra. |
| angle bisector | a ray that splits an angle into 2 smaller and equal angles. |
| arc | a part of circle between 2 points. |
| binomial | a polynimial with only 2 terms. ex: 2x+3y |
| central angle | an angle that starts in the center of a circle or regular polygon and the sides meet the edge of the circle or the corners of the polygon. |
| circumscribed polygon | a polygon that surrounds a cirlce and the circle touches all the sides of the polygon. |
| dependent events | when the outcome of one event affects the outcome of another event.ex: if you take one card from a deck, the outcome of drawing the second card has changed. |
| direct proportion | two quantities (ratios/fractions) that have a constant ratio or equal value.ex: if 2 pizzas cost $10, then 3 pizzas will cost $15; the ratio is 1/5. |
| exponential function | a function that has a variable in the exponent position. |
| Inscribed Angle | an angle whose vertex is on the circle and sides are chords of the circle. |
| Interquartile Range | The difference between the first and third quartile in a set of data. (quartiles are the three values that divide the set of data into fourths)Ex: IQR would be the 50% below the top 25% and above the bottom 25% |
| Inverse Proportion | two quantities that are inversely related. ex: as a car's age increases, its value decreases |
| Irrational Number | a number that cannot be represented as a fraction or ratio. Decimals that do not repeat or terminate.Ex: pi, square root of 2 |
| Line of Best Fit (regression line) | a line drawn on a scatter plot to best estimate the relationship between the two sets of data. |
| Median of a triangle | a line segment drawn from the vertex of an angle to the midpoint of the opposite side. |
| Monomial | A polynomial that is the product of one or more variables.Ex: 2x, 4ab |
| Odds | The ratio of the number of ways an event can occur (successess) to the number of ways it doesnt (failures).ex: the odds of rolling a 2 on a die are 1 to 5, 1/5, 1:5 |
| Outlier | a value that is much greater or much less than the rest of a set of data (greater that 1.5 times the IQR) |
| Polynomial | an algebraic expression that contains one or more monomials. ex: 2a, 3x+8y, 4xy-3x+2 |
| Quadratic Function | equations which are expressed in the form y=ax^+bx+cHint: use FOIL to factor and solve |
| Rational Number | any number that can be expressed as a fraction or ratio of two integers, can be repeating in decimal form. Ex: .5, -9, 2/3, .0505050... |
| Real Number | all rational and irrational numbers. |
| Secant of a circle | a line that intersects the circle in exactly two points. |
| Semicircle | an arc of a circle that is 180 degrees and endpoints are the diameter. |
| Slope | the ratio (fraction) that expresses change in the vertical distance to the change of the horizontal distance between two points on a line. Rise over runEx: change in y/change in x |
| Tangent of a circle | a line that touches a circle in only one point. |
| Trinomial | a polynomial with three terms.ex: 7a+4b+9c |
| incribed polygon | a polygon that is surrounded by a cirlce and whose vertices are located on the circle |
| Midpoint | the point halfway between the endpoints of a line segment |
| absolute value | a number's distance from 0.ex: |-3| = 3 |
Created by:
lpvento
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