Geometry

Circle: arc, sector and segment

A circle has these main slices: arc, sector and segment. In this article we will show how to calculate these parts.

Continue reading · 2021-08-30

Circle: radius, diameter, circumference and area

A circle is a shape consisting of all points are the same distance from the center.

Continue reading · 2021-08-24

The law of cosines and examples

The law of cosines is very useful for solving various tasks with not right triangles.

Continue reading · 2021-08-16

The law of sines and examples

The law of sines is very useful for solving various tasks with not right triangles.

Continue reading · 2021-08-13

Two points: distance between them and midpoint coordinates

In this article we review calculating the distance between two points, when coordinates of these points are known. Also we review calculating midpoint between these points.

Continue reading · 2019-03-02