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

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.

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.

Point, Line, Plane, Segment, Ray, Angle, Collinear, Coplanar.

What happens when lines cross?

How to define a circle?

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.

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You can use the free Mathway calculator and problem solver 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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