### Lines

A long thin mark made with a writing tool is called a line. The line can include:

• A straight line: a line that is marked in one direction
• Curve: a gradually bending line
• Zigzag: a line consisting of sharp left and right turns or angles. The letter Z is a zigzag.
• Wavy: a line consisting of curves
• Dotted line: a line made of very small spots
• Vertical: a line going from down to up or vice versa. The trees are vertical.
• Horizontal: a straight line; parallel to the ground
• Spiral: a line continuously circling around a central point

### Shapes

• Circle: a line that curves until its ends join. A ring is in the shape of a circle.
• Oval: a line that is curved like outline of an egg
• Square: a flat shape having four equal sides (the opposite sides are parallel) and all four internal angles of 90 degree
• Rectangle: a flat shape having four sides (the opposite sides are parallel) and all four internal angles of 90 degree
• Triangle: a flat shape having three sides and three angles
• Pentagon: a flat shape having five sides and five angles
• Hexagon: a flat shape having six sides and six angles
• Octagon: a flat shape having eight sides and eight angles

### Solid figures

A shape that has length, width and height is called a solid figure. The solid shape can include:
• Cube: a solid figure having six square faces that are all equal. A cube has eight points and twelve edges.
• Cone: a solid figure with one circular base and curved side that narrows gradually until it joins to the top called the apex.
• Cylinder: a solid figure consisting of two circular ends and one curved side
• Pyramid: a solid figure consisting of square base and four triangular sides that meet at the top called the apex
• Sphere: a solid figure that is perfectly round like a ball