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Khan Academy on a Stick
Using algebra to find measures of angles formed from transversal
Angles between intersecting and parallel lines
Introduction to vertical angles
Using algebra to find the measures of vertical angles
Proof-Vertical Angles are Equal
Angles Formed by Parallel Lines and Transversals
Identifying Parallel and Perpendicular Lines
Figuring out angles between transversal and parallel lines
Using algebra to find measures of angles formed from transversal
CA Geometry: Deducing Angle Measures
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