# Shared Flashcard Set

## Details

Angles
plane/point/etc.
12
Mathematics
02/02/2012

Term
 Point
Definition
 Is an exact loction. A point is named by a capital letter.
Term
 Line
Definition
 Is a straight path that exends without end on opposite directions. A line is named by two points on the line.
Term
 Plane
Definition
 A flat surface that exends without end in all directions. A plane is named by three points on the plane that are not on the same line.
Term
 Line Segment
Definition
 Is made of two endpoints and all the points between the endpoints. A line segment is named by its endpoints.
Term
 Ray
Definition
 Has one endpoint. From the endpoint,the ray extends without end in one direction only. A ray is named by its endpoint first followed by another point on the ray.
Term
 Angle
Definition
 Is formed by two rays with a common endpoint. Angles are named by the two rays using the common endpoint in the middle of the name.
Term
 Vertex
Definition
 The common endpoint of two rays. The middle point in the name should always b vertex.
Term
 Acute Angle
Definition
 Measures less than 90 degrees.
Term
 Right Angle
Definition
 Measures exactly 90 degrees.
Term
 Obtuse Angle
Definition
 Measures more than 90 degrees, but less than 180 degrees.
Term
 Straight Angle
Definition
 Measures exactly 180 degrees.
Term
 Protractor
Definition
 Tool use to measure angles.
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