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Set 2 cumulative
| Term | Definition |
|---|---|
| acute triangle | a triangle in which each of the three angles is acute (less than 90 degrees) |
| additive pattern | a pattern that occurs when the same value is added to each input to determine the output or y = x + a |
| area | the number of square units inside a closed 2D space |
| congruent | of equal measure; having the same size and same shape |
| decagon | polygon with 10 sides and 10 angles |
| denominator | the part of a fraction below the bar that tells how many equal parts there are |
| difference | the part remaining in subtraction |
| equilateral triangle | a special isosceles triangle with three equal sides and 3 acute 60 degree angles |
| heptagon | polygon with 7 sides and 7 angles |
| hexagon | polygon with 6 sides and 6 angles |
| inverse operations | opposite operations, or ones that undo each other such as addition and subtraction or multiplication and division |
| isosceles triangle | a triangle with at least two congruent sides with all acute, one obtuse, or one right angle |
| multiplicative pattern | a pattern that occurs when the same value is multiplied by an input to determine the output or y = ax |
| nonagon | polygon with 9 sides and 9 angles |
| numerator | the part of a fraction above the bar that tells the number of fractional pieces being used |
| obtuse triangle | a triangle that has one obtuse angle (greater than 90 degrees) and two acute angles |
| octagon | polygon with 8 sides and 8 angles |
| ordered pairs | a pair of numbers used to locate a point on a coordinate plane (x, y) |
| parallel lines | lines in the same plane that do not cross each other; they stay the same distance apart |
| parallelogram | a quadrilateral where opposite sides are parallel and congruent |
| perimeter | a linear measurement around the outer edge of a figure |
| pentagon | polygon with 5 sides and 5 angles |
| perpendicular lines | lines that intersect at right angles to each other to form square corners |
| polygon | a closed plane figure formed by three or more line segments (no curves) |
| product | the total when two or more factors are multiplied |
| quadrilateral | polygon with 4 sides and 4 angles |
| rectangle | a quadrilateral that is a parallelogram and has four right angles |
| regular polygon | polygon with all sides and all angles congruent |
| rhombus | a quadrilateral that is a parallelogram and has four congruent sides |
| right triangle | a triangle with one right angle (exactly 90 degrees) and two acute angles |
| scalene triangle | a triangle with no congruent sides with all acute, one obtuse, or one right angle |
| square | a quadrilateral that is a parallelogram and has four right angles (rectangle) and four congruent sides (rhombus) |
| sum | answer to addition |
| trapezoid | a quadrilateral that only has one pair of parallel sides |
| triangle | polygon with 3 sides and 3 angles |
| x - coordinate | the first number in an ordered pair; it tells how far left or right to move from (0,0) |
| y - coordinate | the second number in an ordered pair; it tells how far up or down to move from (0,0) |
| base | the surface a solid object stands on |
| base area | designated as a capital B in formulas and refers to the area of one of the bases in a solid |
| composite number | a whole number with more than 2 factors |
| cube | 3D figure that is a special rectangular prism with 6 square faces |
| dimension | measure of length in one direction |
| divisible | when a number can be divided by another with a whole number quotient and no remainder |
| factor | a number multiplied by another number to find a product |
| rectangular prism | 3D figure that has 6 rectangular faces, 12 edges, and 8 vertices |
| prime number | a whole number greater than 1 with exactly two factors |
| quotient | the size of each group or the number of groups when the dividend is divided by the divisor |
| volume | the measure of the space occupied by matter; l x w x h = rectangular prism |
| whole numbers | the set of counting numbers and zero (0, 1, 2, 3....) |