• Definition 1 - Point
• Definition 2 - Line
• Definition 3 - Straight Lines
• Definition 4 - Superfices and Superfices2
• Definition 5 - Plane superfices
• Definition 6 - Rectilineal Angle
• Definition 7 - Perpendicular
• Definitions 8 & 9 - Obtuse and Acute angles
• Definition 10 - Figure
• Definition 11,12, & 13 - A Circle, its Center, and its Diameter
• Definition 14 - Semi-Circle
• Definition 15 - Rectilineal figure
• Definition 16 - Trilateral figure
• Definition 17 - Quadrilateral figure
• Definition 18 - Multilateral figure
• Definition 19 - Equilateral triangle
• Definition 20 - Isosceles triangle
• Definition 21 - Scalene triangle
• Definition 22 - Right angled triangle
• Definition 23 - Obtuse angled triangle
• Definition 24 - Acute angled triangle
• Definition 25 - Square
• Definition 26 - Oblong
• Definition 27 - Rhombus
• Definition 28 - Rhomboid
• Definition 29 - Trapeziums
• Definition 30 - Parallel lines

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