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# Go Math Voc. Set 1

a triangle with exactly three acute angles acute triangle
a pattern where the same value is added to the x-coordinate each time or y = x + a additive pattern
the number of square units needed to cover a surface. l x w = formula for a rectangle area
of equal measure; having the same size and same shape congruent
polygon with ten sides and ten angles decagon
the part of a fraction below the bar that tells how many equal parts there are denominator
a triangle with three equal sides and 3 acute 60 degree angles equilateral triangle
polygon with seven sides and seven angles heptagon
polygon with six sides and six angles hexagon
opposite operations, or ones that undo each other such as addition and subtraction or multiplication and division inverse operations
a triangle with two congruent sides, with all acute, one obtuse or right angle isosceles triangle
a pattern where the x-coordinate is multiplied by the same number each time or y = ax multiplicative pattern
polygon with nine sides and nine angles nonagon
the part of a fraction above the bar that tells the number of fractional pieces being used numerator
a triangle that has one obtuse angle (one angle larger than 90 degrees) obtuse triangle
polygon with eight sides and eight angles octagon
a pair of numbers used to locate a point on a coordinate plane (x,y) ordered pair
lines in the same plane that do not cross each other; they stay the same distance apart parallel lines
a quadrilateral where opposite sides are parallel and congruent parallelogram
distance around a figure perimeter
polygon with five sides and five angles pentagon
lines that cross and form a right (90 degree) angle perpendicular lines
a closed plane figure formed by three or more line segments polygon
the total when two or more factors are multiplied product
polygon with four sides and four angles quadrilateral
a quadrilateral that is a parallelogram and has four right angles rectangle
polygon with all sides and all angles congruent regular polygon
a quadrilateral that is a parallelogram and has four congruent sides rhombus
a triangle with one right (90 degree) angle right triangle
a triangle with no congruent sides, with all acute, one obtuse, or one right angle scalene triangle
a quadrilateral that is a parallelogram and has four right angles (rectangle) and four congruent sides (rhombus) square