Geometry Vocabulary Flashcards

Questions and Answers

What is a line?

An angle whose measure is less than 90

A flat figure with no thickness

Two end points and all the points in between them

The set of all points collinear to two points (correct)

What defines a segment?

Two end points and all the points in between them

What is a plane?

A flat figure with no thickness that extends indefinitely in all directions

What is a ray?

A line with a single endpoint that extends infinitely in one direction Signup and view all the answers

What is an acute angle?

An angle whose measure is less than 90 Signup and view all the answers

What is a vertex in geometry?

Point in common of two rays that form an angle Signup and view all the answers

What is a midpoint?

The middle point of the line segment Signup and view all the answers

What is an obtuse angle?

An angle whose measure is greater than 90 and less than 180 Signup and view all the answers

What are complementary angles?

The sum of two angles whose measures is 90 Signup and view all the answers

What are supplementary angles?

The sum of two angles whose measures is 180 Signup and view all the answers

What defines an angle?

Two non-collinear rays with a common endpoint Signup and view all the answers

What does perpendicular mean?

Lines that meet at a 90 degree angle Signup and view all the answers

What are vertical angles?

Two non-adjacent angles formed by two intersecting lines Signup and view all the answers

What is a straight angle?

An angle formed by opposite rays Signup and view all the answers

What does congruent mean in geometry?

Geometric elements of equal measure Signup and view all the answers

What does coplanar mean?

Points that lie on the same plane Signup and view all the answers

What does collinear mean?

Points on the same line Signup and view all the answers

What does adjacent mean?

Two angles with a common side but no common interior points Signup and view all the answers

What defines a point in geometry?

A precise location or place on a plane, usually represented by a dot Signup and view all the answers

What are parallel lines?

Coplanar lines that do not intersect Signup and view all the answers

What is a bisector?

The line that divides something into two equal parts Signup and view all the answers

What does intersecting mean?

Two or more lines that meet or cross at a point Signup and view all the answers

What is the origin in a coordinate plane?

(0, 0) Signup and view all the answers

What is a coordinate plane?

A plane that is divided into four regions by the x-axis and y-axis Signup and view all the answers

What is a quadrant?

One of four sections into which the coordinate plane is divided Signup and view all the answers

What is distance in geometry?

The length of a path between two points Signup and view all the answers

What are skew lines?

Lines that do not intersect and are not coplanar Signup and view all the answers

Study Notes

Geometry Vocabulary Study Notes

Line: A set of points collinear to two distinct points, extending infinitely in both directions.
Segment: Consists of two endpoints and all points in between, representing a finite portion of a line.
Plane: A flat, two-dimensional figure with no thickness that extends indefinitely in all directions.
Ray: A line that has one endpoint (or point of origin) and extends infinitely in one direction.
Acute Angle: An angle measuring less than 90 degrees.
Vertex: The common point where two rays meet to form an angle.
Midpoint: The exact middle point of a line segment, equidistant from both endpoints.
Obtuse Angle: An angle that is greater than 90 degrees but less than 180 degrees.
Complementary Angles: Two angles whose measures add up to 90 degrees.
Supplementary Angles: Two angles whose measures add up to 180 degrees.
Angle: Formed by two non-collinear rays that share a common endpoint, known as the vertex.
Perpendicular Lines: Lines that intersect to form a right angle (90 degrees).
Vertical Angles: Two non-adjacent angles created when two lines intersect, having equal measures.
Straight Angle: An angle formed by opposite rays, measuring exactly 180 degrees.
Congruent: Geometric elements (angles, segments) that are of equal measure.
Coplanar Points: Points that lie within the same geometric plane.
Collinear Points: Points that lie on the same straight line.
Adjacent Angles: Two angles that share a common side and have no interior points in common.
Point: A precise location in a plane, typically represented by a dot; has no dimensions.
Parallel Lines: Coplanar lines that never intersect and remain equidistant from each other.
Bisector: A line that divides an angle or segment into two equal parts.
Intersecting Lines: Lines that meet or cross at a single point.
Origin: The point in the coordinate plane represented by (0,0).
Coordinate Plane: A two-dimensional plane divided into four regions by a horizontal line (x-axis) and a vertical line (y-axis).
Quadrant: One of the four sections formed in the coordinate plane.
Distance: The length of the shortest path between two points, measurable in units.
Skew Lines: Lines that do not intersect and are not coplanar.

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Description

This quiz consists of flashcards covering essential vocabulary terms in geometry such as line, segment, plane, and ray. Each term includes a precise definition to help reinforce understanding of geometric concepts. Perfect for students looking to enhance their geometry skills!