Basic geometry:
Lines, Line Segments, and Rays:
Angles Basic:
Complementary and Supplementary Angles:
Vertical angles are equal:
Angles Formed by Parallel Lines and Transversals:
Lines, Line Segments, and Rays:
Angles Basic:
Complementary and Supplementary Angles:
Vertical angles are equal:
Angles Formed by Parallel Lines and Transversals: