1. Triangles
2-d shapes with 3 straight sides

2. Equilateral Triangle
• 3 sides of equal length
• 3 interior angles of equal size (60˚)

3. Isosceles Triangle
• 2 sides of equal length
• 2 interior angles of equal size

4. Scalene Triangle
• No sides of equal length
• No interior angles of equal size

5. Right Angled Scalene Triangle
• No sides of equal length
• No interior angles of equal size
• 1 interior right angle (90˚)

6. Right Angled Isosceles Triangle
• 2 sides of equal length
• 2 interior angles of equal size
• 1 interior right angle (90˚)