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Geometry Definitions




 

Videos and lessons to help High School students know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point,line, distance along a line, and distance around a circular arc.


Common Core: HSG-CO.A.1

Related Topics:
Common Core (Geometry)

Common Core for Mathematics

Geometry: Some Precise Definitions
CC.9-12.G.CO.1 Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc.
Geometry Vocabulary
G.CO.1: Know precise definitions of angle, circle, perpendicular line, parallel line, line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc.



Introduction to Geometry
Point, Line, Plane, Segment, Ray, Angle, Collinear, Coplanar.
Point, Line, Plane Examples


 
Parallel, Intersecting, Perpendicular Lines
What happens when lines cross?
How do you find the distance between two points?


How to define a circle?
Degrees, Radians, and Arc Length
This video demonstrates how to convert from degrees to radians and from radians to degrees. Also, use of the arc length formula is shown and problems worked to find an unknown arc length, an unknown angle, and an unknown radius.


 

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.


You can use the free Mathway widget below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.


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