This is a game to improve intelligence. Do you always forget things or things you want to do in your life? Here we can exercise our brains, develop our intelligence, learn more about our brains and make up for each other's weaknesses. It designs checkpoints from five aspects: analysis, memory, imagination, calculation and intuition.

Basic definition

A closed figure composed of three line segments that are not on the same straight line is called a triangle. A figure surrounded by three straight lines on a plane or three arcs on a sphere is called a plane triangle; A figure surrounded by three arcs is called a spherical triangle, also known as a triangle.

A closed geometry consisting of three line segments connected end to end is called a triangle. Triangle is the basic figure of geometric figure. Triangle is a closed figure composed of three line segments on the same plane but not on the same straight line, which has applications in mathematics and architecture.

Ordinary triangles are divided into ordinary triangles (three sides are unequal) and isosceles triangles (isosceles triangles with unequal waist and bottom and isosceles triangles with equal waist and bottom, that is, equilateral triangles); According to the angle, there are right triangle, acute triangle and obtuse triangle, among which acute triangle and obtuse triangle are collectively called oblique triangle.