How to Draw a Circle Given Three Points

Given just three points, you can draw the perfect circle. This neat trick can be useful if you’re not able to use a compass or trace around a suitable sized round object.

Edit Steps

1. Start with three points. Draw three points on a piece of paper approximating the size of the circle you wish to draw.


2. Using a straight edge, draw two line segments connecting two points per segment.
   
   
   


3. Draw the perpendicular bisector of the segments you have drawn.
   
   
   
   
   
   
   • The intersection of the perpendicular bisectors is the center of the circle.
   
   
   
   


4. Draw a circle with the radius from the center of the circle to a point given.
   
   
   
   


5. Erase the perpendicular bisectors and draw another line segment connecting the two points, forming a triangle. Or, simply erase all the lines and you have your circle.
   
   
   
   

Edit Related wikiHows

• How to Draw a Circle


• How to Construct a Line Parallel to a Given Line Through a Given Point

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Source: How To

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How to Water Plants with Coffee

No one likes to toss out leftover brewed coffee that turned warm. If you have a few acid-loving plants around, either in the garden or in containers, you can recycle the coffee into a nutritious treat that they’ll love. Coffee contains quite a few nutrients which such plants will love, including potassium, calcium, nitrogen, phosphorous and other minerals.^[1]

Edit Steps

Edit Part One: Checking the Compatibility of Coffee for Your Plants

1. Research to see whether your plant is acid-friendly. Look up the type of plant that you have and see if it correctly digests acidic products. Many herbs and indoor plants will be suitable for this liquid coffee treatment. These are some examples that you can spray a coffee mixture on:
   
   
   
   • Spider plants
   
   
   • Roses
   
   
   • Hydrangeas
   
   
   • African Violets.
   
   
   
   


2. Use coffee grounds on other plants. As well as using up the liquid, there are ways to also get rid of the grounds that are beneficial for suitable plants. For example, you can combine coffee grounds with soil, compost or fertilizer. These products can then be given to plants such as the following, to boost their growth:
   
   
   
   • Lettuce
   
   
   • Gardenias
   
   
   • Azaleas
   
   
   • Hibiscus.
   
   
   
   

Edit Part Two: Making and Applying the Coffee Mixture

1. Brew your coffee as usual. Decide if you wish to brew a normal batch or a strong mixture, as this will determine how much water you will need to use later.
   
   
   


2. Use only untouched brewed coffee. Consume, save, or discard any coffee that has been mixed with sugar and/or cream.
   
   
   
   


3. Dilute the coffee.^[2] Combine about 1/2 cup (120 ml) of water more than coffee as a standard mixture.
   
   
   
   
   
   
   • For example, if you have 1 cup (240 ml) of leftover coffee, mix it with 1 1/2 cups (350 ml) of water.
   
   
   • The amount of water can be more or less, depending how strong the original coffee is.
   
   
   
   


4. Add the coffee liquid to a water sprayer or can.
   
   
   
   


5. Water the plants. Select one day out of the week to apply the diluted coffee on the plants. Coffee can be quite acidic, so you will only need to use it sparingly versus natural water.
   
   
   
   
   
   
   • Start out small. It is better to give just a little and work out what your plants respond to than to overdo it and cause the plant to react poorly. You can slightly increase the dosage until you consider it is sufficient.
   
   
   
   

Edit Video

Edit Tips

• It is also useful to know the pH of the soil, to avoid rendering it too acidic for the plant.


• More garden uses for coffee can be found at How to use coffee grounds in your garden.

Edit Related wikiHows

• How to Make a Compost Tea


• How to Use Coffee Grounds in Your Garden


• How to Increase Nitrogen in Soil


• How to Fertilize a Garden Cheaply

Edit Sources and Citations

• http://ift.tt/1fH1TYm – research source

Cite error ; $2

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Source: How To

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