Geometry Vocabulary for 5th Graders
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is a two-dimensional object that can be folded to make a three-dimensional object? | net
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| Figures with the same size and shape or line segments that are the same length are _________. | congruent
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| When you turn a figure around a point, you are doing a _______ . | rotation
roTation (T for turn)
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| Two lines that intersect at right angles are called _______. | perpendicular
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| A three-dimensional figure is called a _____. | solid figure
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| When you slide a figure from one place to another, you are doing a ______. | translation
tranSLation (SL for slide)
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| The face of a solid figure by which the figure is measured or named is called the _______. | base
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| Figures that have the same shape but different sizes are called _______. | similar
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| When two or more lines cross or meet at exactly one point they are called ______. | intersecting lines
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| Lines that are always the same distance apart and will never cross or touch are called _________. | parallel
(The double letters in the middle remind us of the meaning of the word!)
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| A figure that can be measured in only two directions (length and width) is called a _______. | two-dimensional figure
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| A figure that can be measured in three directions (length, width, and height) is called a _____. | three-dimensional figure
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| When you make a mirror image of a figure by flipping it over, you are making a _________. | reflection
reFLection (FL for flip)
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| A tool used for drawing and measuring angles is called a ________. | protractor
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| Angles that measure less than 90 degrees are called _____. | acute angles
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| Angles that measure greater than 90 degrees are called ______. | obtuse angles
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| Angles that measure exactly 90 degrees are called _____. | right angles
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| In geometry, what is the name of a location on a line, line segment, ray or plane (usually drawn as a dot)? | point
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| A _____ extends out in two directions and can go on forever. We always name two points somewhere on a ______. | line
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| A ___________ is a piece a line that has two endpoints. We name a _______ by its endpoints. | line segment
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| A _______ has one endpoint and extends in one direction forever. We always name the endpoint first and then one more point on a _____. | ray
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| A three-sided figure whose sides and angles are all equal is called a ______. | equilateral triangle
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| A three-sided figure that has two sides that are equal to each other and one side that is a different length is called a ______. | isosceles triangle
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| A three-sided figure with no equal sides (all three sides are different lengths) is called a ______. | scalene triangle
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| a three-sided figure in which one of its angles is a right angle (90 degrees)is called a _________. | right triangle
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| Where two sides of a solid figure meet is called the ______. | edge
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| Where three sides of a solid figure meet is called a _______. | vertex (plural is vertices)
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| The flat sides of a geometric solid are called ______. | faces
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| A two-dimensional (flat) figure that goes on in two directions forever is called a ________. | plane
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| A plane (flat) figure with three or more straight sides is called a _____. | polygon
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| A plane figure that has four sides and four angles is called a _____. | quadrilateral
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| A plane figure with four congruent (equal) sides and four right angles is a _____. | square
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| A four-sided figure with right angles and with opposite sides that are parallel is a _____. | rectangle
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| A plane figure with four sides whose opposite sides are parallel and equal to each other is a _____. | parallelogram
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| A parallelogram whose sides are all equal is a _____. | rhombus
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| A figure with four sides but with only two sides that are parallel is a _____. | trapezoid
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| the sum of all the sides (s + s + s) | perimeter
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| length times width (l x w) | area
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| length times width times height (l x w x h) | volume
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Created by:
elfmother91
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