How to make a 45 degree angle

It is sufficient to take the usual school supplies – pencil and paper, a ruler, a protractor and a compass – and you can draw any geometric shape, whether square, oval, triangle,square. However, there are cases where the drawing tools at hand at all or their number is limited, but even in this case, you can do the desired drawing.

You will need

• - the range;
• pencil;
• paper;
• a pair of compasses;
• - protractor;
• - right triangles

Instruction

1. If there is nothing but sheet of paper and a pencil, then you can do even these facilities. To do this, very carefully roll the sheet of paper in four, with good smoothing down the folds. As a result, the dual bend will get a right angle which is 90°. Fold the corner in half again, and get the desired angle of 45°. The truth in this case will appear a small error in the loss of several degrees. For more accurate drawing draw a right angle with a pencil on a blank sheet of paper, carefully cut it out and fold in half – this will give an angle of 45°.
2. You can draw the angle using a rectangular tregons, which varies with angles 90°, 45°, 45° and 90°, 60°, 30°. Take tregon (with angles 90°, 45°, 45°) and draw on a sheet of paper at a sharp angle of 45°. If there is only tregon with angles 90°, 60°, 30°, then on another sheet of paper draw a straight angle, cut it out, fold in half and draw the desired drawing. This will be the angle of 45°.
3. The most accurate version of the construction in which a protractor is used. Draw on paper a line, mark on it a corner point, attach the protractor and mark a point 45° , and then connect them together.
4. Interestingly, even with a compass can also represent the angle at 45° . For this it is enough to have a picture angle of 90° (for example, using a rectangular tregonand or by folding paper squares). Then from the corner point of the compass, swipe a circle. At the intersection of the circle and the sides of a right angle mark the point. Now from each of the two points with the same solution of the compass make two more circles. In their point of intersection will be a point that you connect with a corner, which will get two angle of 45° .