Construct the center of the circumference of the triangle - this is how it works

Construct the center of the circumference for the triangle

If you do not know how to construct the center of the circumference in a triangle, then you are faced with only one small problem. Because it is really easy to define the center of the circumference in a triangle. The basic requirement for determining the center point is a sharp pencil so that you can draw very precisely. You should also be familiar with a few principles.

• The center point for the circumference of a triangle is the intersection of the perpendiculars.
• In the case of a triangle with three acute angles, the center of the circumference lies in the triangle.
• It should be a triangle with a blunt one angle act, then the intersection of the normal perpendicular lies outside the triangle.
• In the case of triangles with a right angle, the center of the circumference is on the hypotenuse.


Draw an equilateral triangle - this is how it works with a compass and ruler

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An equilateral triangle "only" with a compass and ruler, so not with the set square, ...

You have to keep this in mind when using a triangle with a perimeter

1. First, draw a triangle on the drawing paper with a pencil.
2. Mark the centers of sides a, b and c exactly.
3. In the middle of sides a, b and c, draw lines with the set square at right angles to the sides.
4. The point where these three lines meet is the center point of the perimeter of the triangle you drew. The distances from this center point to all three corners of the triangle are the same.
5. Now take your compass, pierce the point of the compass in the center of the circumference and set the compass line exactly on a corner point of the triangle.
6. Now draw a circle around the triangle with the compass. When the circle touches all three corners of the triangle, you have drawn accurately.

As you can see, it is very easy to construct the center point for the perimeter of a triangle.