Angles: Types and Parallel Line Relationships (detailed) — free printable diagram

About this illustration

A detailed, labelled classroom reference chart titled 'Angles: Types and Parallel Line Relationships'. The left panel (Part 1) shows six types of angles — Acute, Right, Obtuse, Straight, Reflex, and Revolution — each with a geometric illustration and a protractor diagram. The right panel (Part 2) shows two parallel lines l and m cut by a transversal t, with eight numbered angles at the two intersections, and four colour-coded boxes defining Co-interior, Alternate, Corresponding, and Vertically Opposite angles with their pairs listed. An 'Important Facts' box at the bottom summarises key properties when l ∥ m.

How to use

1. 1Right-click the image and choose “Save image as”, or use the download button.
2. 2Use it in your classroom worksheets, slides or printables — free under CC BY-NC 4.0.
3. 3Attribute as “Image by Kuraplan” or link back to kuraplan.com. Not for commercial resale.