Chapter 6: Lines and Angles

Parallel Lines & Transversal

Parallel Lines and Transversal

Angles Formed by Transversal

Corresponding Angles (F-shape)

Equal when lines are parallel

Alternate Interior Angles (Z-shape)

Equal when lines are parallel

Co-interior Angles (C-shape)

Supplementary when lines are parallel (180°180°)


Angle Sum Property

Sum of angles in a triangle = 180°180°

Exterior Angle Theorem

Exterior angle = Sum of two interior opposite angles