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# Math 7 Unit 6.1

### Angles and Circles

A ____________ is a part of a line and an angle is formed by two of them that have the same endpoint. ray
A ____________ angle forms a square corner that measures 90 degrees. right
An ______________ angle is less than a right angle. acute
An ______________ angle is greater than a right angle. obtuse
A ___________ is a unit used to measure angles. degree
A ___________ is a straight path of points that extends without end in both directions. line
A _______________is a part of a line that includes any two points on the line and all the points in between those two points. line segment
A ____________ is a location in space with no length, width, or depth. point
A ____________________ is a tool to measure the degrees in an angle. protractor
A ___________________ is an angle that measures exactly 180°; it is a line. straight angle
A ______________ is the common endpoint of the two rays or segments that form an angle less than 180°. vertex (plural: vertices)
The vertex of a 180° angle is any __________ along the line. point
The plural of vertex is _____________. vertices
An _______________ is an angle whose measure is greater than 0° and less than 90°. acute angle
An _______________ is an angle whose measure is greater than 90° and less than 180°. obtuse angle
A __________________ is an angle whose measure is exactly 180°. straight angle
A _____________ is a collection of points in a straight path that extends without end in both directions. line
A (An) _____________ is a figure formed by two rays, called sides, that share the same endpoint. angle
A (An) ____________ is the endpoint that two rays that form an angle share. vertex
You can name an ____________ by using three points by naming a point on one side, the vertex, and then a point on the other side. angle
You can use just the _______________ to name an angle. vertex point
You can use a ____________, such as a number or a lowercase letter that may be near the vertex, between the sides to name an angle. label
Created by: Smdebusk