Geometry Vocabulary Review and Practice
Presentation
•
Mathematics
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6th - 9th Grade
•
Hard
David Weinstein
Used 6+ times
FREE Resource
51 Slides • 0 Questions
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Geometry Vocabulary Review and Practice
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Diameter
A line segment from one edge of a circle to the other passing through the center point.
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Radius
Half the diameter. A line segment from the center of a circle to the edge. Half the diameter. A line segment from the center of a circle to the edge.
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Interior
Inside of an object.
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Interior Angle
Angle created inside a shape.
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Exterior
Outside of an object.
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Exterior Angle
Angles created by the extension of sides of a polygon.
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Circumference
The perimeter of a circle. The distance around a circle.
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Perimeter
The distance around a two-dimensional object or shape.
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Area
The space a two dimensional object occupies, described in square units.
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Volume
The amount of space a three dimensional object occupies, described in cubic units.
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Vertex
A corner of a shape. Where two or more lines or line segments intersect.
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Vertices
More than one vertex.
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Center
Center: A point located an equal distance from all edges of a shape.
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Arc
A segment of the circumference of a circle.
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Chord
A line segment from one edge of a circle to another edge.
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360 degrees
Units of measure of angles to describe turning completely around a circle. Units of measure of angles to describe turning completely around a circle.
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Degrees
Unit of measure for angles.
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Pi
An irrational number that is the ratio of the circumference of any circle to the diameter of that circle.
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Circle
A two dimensional shape that is a continuous curve equally distant from a center point.
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Sphere
A three dimensional round object with all points on it’s exterior equally distant front the center.
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Polygon
A two dimensional closed shape with three or more straight sides.
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Not a Polygon
A two dimensional shape with a curved side, intersecting lines, or an open side.
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Square
A two dimensional quadrilateral with equal side lengths and 90 degree angled vertices.
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Cube
A three dimensional object created by six equal squares.
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Line
A straight collection of points with no end.
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Line Segment
A part of a line with a beginning and an end.
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Line or Line Segment?
Continues forever (arrows) or ends!
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Two-Dimensional
A flat surface. Also called a "plane".
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Plane
A flat, two-dimensional surface that extends infinitely far.
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Three-Dimensional
An object with volume that occupies space.
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Irrational number
A number with never ending decimal places.
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Quadrilateral
A four sided shape.
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Ray
Collection of points with a beginning point but no end - continues forever in one direction.
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Angle
Two rays that meet at a certain vertex.
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Vertex
The point where two rays, lines, or line segments meet.
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Parallel Lines
Two lines that never meet.
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Perpendicular Lines
Two lines that meet (intersect) at 90 degrees.
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Perpendicular Lines
Meeting at 90 degrees.
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Intersecting Lines
When two lines cross - like an intersection of two roads.
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Types of Intersections
Learn them!
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Complementary Angles
Two or more angles that have a sum (add up to) of 90 degrees.
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Complementary Angles
Angles that have a sum of 90 degrees.
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Supplementary Angles
Two or more angles with a sum (add up to) of 180 degrees (a straight line).
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Supplementary Angles
Two or more angles with a sum of 180 degrees.
Notice how the relationship is written in symbols.
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Acute Angle
An angle with a measure of less than 90 degrees.
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Obtuse Angle
An angle with a measure of greater than 90 degrees.
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Right Angle
An angle with a measure of exactly 90 degrees.
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Right Angle
An angle with a measure of exactly 90 degrees.
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Straight Angle
An angle with a measure of exactly 180 degrees.
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Types of Angles
Learn them!
Geometry Vocabulary Review and Practice
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