How to Draw a Parabolic Curve (a Curve with Straight Lines)
A parabolic curve is a two-dimensional drawing that seems to make a curve. It is very easy to do, and once you master it, the possibilities are endless!
1. **Find graph paper.** When you are learning, it is best to use graph paper. If you don't have any graph paper, continue on to method 2.
2. **Position the paper lengthwise.** Put the paper so the long end is on the bottom/top and the short ends on the side. If you are using square graph paper, you can skip this step.
3. **Using a ruler, draw a line from the top left square to the right of the bottom left cube.** Make sure the line is straight.
4. **Using the ruler again, draw another line from the second to top left square and two out from the bottom left corner.** 
5. **Continue moving down on the left side, and out on the bottom.** Make sure you don't connect the wrong end to wrong end, as it is hard to erase.
6. **Repeat until you reach the bottom square on the left side.** 
7. **Finished!** 
8. **Draw a right angle.** The taller you make it, the smoother your Parabolic Curve will be.
9. **Add notches, dots, points, etc.** on both sides of the angle. Make sure they are evenly spaced and equal on both sides.
10. **Using a ruler, draw a line from the top left notch to the right of the bottom left botch.** Make sure the line is straight. Repeat with the next notch
11. **Using the ruler again, draw another line from the third to top left notch and four out from the bottom left corner.** 
12. **Continue moving down on the left side, and out on the bottom.** Make sure you don't connect the wrong end to wrong end, as it is hard to erase.
13. **Repeat until you reach the bottom notch on the left side.** 
14. **Finished!** 
15. **Draw a circle** Use a compass, as it is essential that it is a good circle.
16. **Notch the edges of the circle.** Notch them in equal distance from each other.
17. **Depending on how wide you want you parabolic curve to be, draw a line from one line to another.** 
18. **Continue connecting the notches with lines.** Continue as needed.
19. **You're finished when you are at where you started.** 
20. **Finished!** 
21. **Draw it as a cube.** This is a really cool doodle that isn't too hard. Simply draw the cube first, then use the angles of the cube to make the curves.
22. **Make it using yarn or string.** This is even cooler than doing it on paper!
23. **Draw a parabolic curve using an angle greater or less than 90°.** This makes the curve narrower or wider.
24. **Draw three parabolic curves inside a triangle.** This makes a three-sided star.
25. **Combine parabolic curve sections to make a work of art!** 
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