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MATH in 2nd Gr

Fractions, Shapes, and Concepts

QuestionAnswer
numerator the top number in a fraction; tells how many are shaded
denominator the bottom number in a fraction; tells how many (in all)
fraction A number that names part of a whole or a part of a group
set (group) a whole unit that can be divided into parts, which are fractions of the whole
whole the complete thing; all of the parts
half 1 out of 2 parts
equal parts parts that are divided and are the same
plane shapes shapes that have no thickness
square a rectangle with 4 sides of equal length
rectangle a closed plane shape with 4 sides and 4 right angles
triangle a closed plane shape with 3 sides and 3 angles
hexagon a closed plane shape with 6 sides and 6 angles
trapezoid a 4-sided plane shape with 2 sides parallel and 2 sides not parallel
parallel like train tracks; the lines never touch or cross
pentagon a 5-sided plane shape
parallelogram a 4-sided plane shape with opposite sides that are parallel and equal in length
side straight part of a shape
angle the place where two or more edges meet
right angle a special angle that forms a square
vertex the place where 2 or more edges meet (starts with "v")
quadrilateral name for all shapes with 4 sides
acute angle an angle that is less than a right angle
obtuse angle an angle that is greater than a right angle
solid shapes 3-dimensional shapes (have width, length, height)
rectangular prism 3-d shape with 6 rectangular faces and 12 edges
sphere 3-d shape with 0 flat faces
cone 3-d shape with a flat round base
cylinder 3-d shape with circle faces at each end
cube 3-d shape with 6 square faces and 12 edges
face flat surface of a 3-d shape
edge line segment formed where 2 faces of a 3-d shape meet
Created by: cbradham
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