Grade 8 Matematics Vocabulary

12345678910
Across
  1. 1. The steepness of a line on a graph. It is calculated by the change in y divided by the change in x between two coordinate points (x, y) on the line. When an equation is in slope-intercept form, slope is represented by the variable m.
  2. 7. Two shapes are congruent if their corresponding sides and angles are all equal.
  3. 8. A graph that displays bivariate data so that each member of the population is represented by a dot. By looking at the overall pattern of dots on the graph, you can get a general idea about the relationship between the two variables.
  4. 9. Data relating to a variable that places the population into different groups, such as race or geographic location.
  5. 10. root When a number, n, is cubed, and it produces another number, x, then n is the cube root of x (n^3 = x). For instance, (cube root of 27) = 3
Down
  1. 2. This theorem addresses the connection between a right triangle's hypotenuse, c, and its other two sides, a and b. The theorem is a^2 + b^2 = c^2.
  2. 3. A number that can be written as a fraction. Rational numbers include integers and fractions, as well as many decimals and radicals.
  3. 4. The angle ∠ABC consists of the two rays from B that pass through A and C respectively. The spread between the directions of these rays is measured in degrees (°), and this measure is occasionally written m∠ABC, or sometimes ∠ABC, or even ∠B. 360° is a complete revolution.
  4. 5. A set of data that contains information about two variables, such as annual income and education level for individuals.
  5. 6. Numbers that cannot be written as fractions. Examples of irrational numbers include pi, radical two and Euler's number.
  6. 8. A shape is similar to another shape if its sides and angles are all proportional to the corresponding sides and angles of the other shape.