# Shared Flashcard Set

## Details

Geometry Unit 1
Unit 1 test vocab
45
Mathematics
11th Grade
09/18/2013

## Cards Return to Set Details

Term
 Acute Angle
Definition
 An angle that is less than 90 degrees
Term
 Adjacent Angles
Definition
 Angles that have a common vertex, but don't overlap.
Term
 Angle
Definition
 A figure formed by two rays.
Term
 Angle Bisector
Definition
 A line which cuts an angle into two equal halves.
Term
 Area
Definition
 The size of a shape's surface.
Term
 Axiom
Definition
 A proposition that is assumed without proof for the sake of studying the consequences that follow from it.
Term
 Circumference
Definition
 Area of a circle.
Term
 Collinear Points
Definition
 Three or more points that lie in a straight line.
Term
 Compass
Definition
 A tool used to make curved lines and circles.
Term
 Complementary Angles
Definition
 Two angles that add up to 90 degrees
Term
 Congruent Angles
Definition
 Angles that are exactly the same in degrees.
Term
 Congruent Segments
Definition
 Segments that have the same length.
Term
 Construction
Definition
 To draw shapes, angles or lines accurately.
Term
 Coordinate
Definition
 How the position of a point can be defined by x and y.
Term
 Coordinate Plane
Definition
 A plane with an x and y axis.
Term
 Coplanar
Definition
 Being or operating in the same plane.
Term
 Distance
Definition
 The extent or amount of space between two things, points, lines, etc.
Term
 Endpoint
Definition
 The point on each side of an interval marking its extremity on that side.
Term
 Intersection
Definition
 When one line passes through another.
Term
 Isometric Drawing
Definition
 Having equal dimensions or measurements.
Term
 Line
Definition
 A continuous extent of length, straight or curved, without breadth or thickness.
Term
 Linear Pair
Definition
 Two angles that are adjacent and supplementary.
Term
 Measure of an Angle
Definition
 The concepts of equality, sums, and differences of angles.
Term
 Midpoint
Definition
 The point on a line segment or an arc that is equidistant, when measured along the line or the arc, from both endpoints.
Term
 Net
Definition
 The 2-D pattern that creates the figure.
Term
 Obtuse Angle
Definition
 An angle that's more than 90 degrees, but less than 180 degrees.
Term
 Opposite Rays
Definition
 Two rays with a common endpoint that form a straight line.
Term
 Orthographic Drawing
Definition
 Method of showing a dimensional object in two dimensions.
Term
 Perimeter
Definition
 The border or outer boundary of a two-dimensional figure.
Term
 Perpendicular Bisector
Definition
 A line which cuts a line segment into two equal parts at 90 degrees.
Term
 Perpendicular Lines
Definition
 A line is perpendicular to another if they meet at 90 degrees.
Term
 Plane
Definition
 A surface generated by a straight line moving at a constant velocity with respect to a fixed point.
Term
 Point
Definition
 Exact location in a space.
Term
 Postulate
Definition
 A proposition that requires no proof, being self-evident, or that is for a specific purpose assumed true, and that is used in the proof of other. propositions
Term
 Ray
Definition
 A line that goes on forever.
Term
 Right Angle
Definition
 An angle that is 90 degrees.
Term
 Segment
Definition
 A line linking two points.
Term
 Segment Bisector
Definition
 A point, segment, line, or plane that divides a line segment into two equal parts.
Term
 Sides of an Angle
Definition
 The ray where measurement of an angle starts.
Term
 Space
Definition
 Something that has depth, width and height.
Term
 Straight Angle
Definition
 A straight line that is always 180 degrees.
Term
 Straightedge
Definition
 A tool that can make a straight line, like a ruler.
Term
 Supplementary Angles
Definition
 Two angles that add up to 180 degrees.
Term
 Vertex of an Angle
Definition
 The point about which an angle is measured.
Term
 Vertical Angles
Definition
 One of two opposite and equal angles formed by the intersection of two lines.
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