Tip 1: How to find the trapezium center

The science

Tip 1: How to find the trapezium center

A trapezoid is a quadrilateral with only one pair of opposite sides parallel. To find Centre Trapezoid very simple. Follow the step-by-step instructions below.

You will need

Pencil, ruler

Instructions

Take the ruler. Using it, find the middle of one base Trapezoid. Base Trapezoid is one of the parallel sides. Measure the length of the base, divide it by two. Measure from the beginning of the base along its length the value found and put a dot. Also measure the length of the second base Trapezoid. As a result, on two parallel sides you will have marks exactly at their midpoints.

Connect the found bases found in the previous step to the straight line. Do it with a pencil and a ruler. Now the dots denoting the means Trapezoid, are connected by a straight line.

Find the middle of the straight line that you spent in the previous step. To do this, use the ruler to measure the length of the line and divide it into two. From either of the bases Trapezoid measure this line half its length and put a point. This point is Centreohm Trapezoid.

Tip 2: How to find the middle

Sometimes in daily activities it may be necessary to find middle straight line segment. Say, if you want to make a pattern, a sketch of a product, or simply cut a wooden block into two equal parts. To the aid comes geometry and a little worldly wit.

You will need

Compasses, ruler; pin, pencil, thread

Instructions

Use conventional tools designed to measure length. This is the easiest way to find middle segment. Measure the length of the segment with a ruler or tape measure, divide the obtained value in half and measure from the end of the segment the result obtained. You will get a point corresponding to the middle of the segment.

There is a more accurate way of findingthe middle of the segment, known from the course of school geometry. To do this, take the compass and ruler, and the ruler can replace any object of suitable length with an even side.

Set the distance between the legs of the compass,so that it is equal to the length of the segment or greater than half of the segment. Then put the needle of the compass at one end of the segment and draw a semi-circle so that it intersects the segment. Move the needle to the other end of the segment and, without changing the swing of the legs of the compass, draw a second semicircle in exactly the same way.

You have received two intersection points of semicircles on both sides of the segment, middle which we want to find. Connect these two points using a ruler or a flat bar. The connecting line will pass exactly in the middle of the segment.

If at hand there was no compass or lengththe length significantly exceeds the permissible range of its legs, you can use a simple device from improvised means. You can make it from a regular pin, thread and pencil. Tie the ends of the thread to the pin and pencil, while the length of the thread should slightly exceed the length of the segment. Such improvised replacer of the compass remains the steps described above.