In computer technology, 2D graphics refer to computer-based digital image generation, that is, two-dimensional computer graphics; in everyday life and in math, it more often means flat shapes with only length and width and no thickness.
math
A icosahedron is a type of symmetrical polyhedron with 20 faces, 12 vertices, and 30 edges, where each face is an equilateral triangle, and it's one of the five Platonic solids.
A 20-sided polygon is a closed shape with 20 sides and 20 vertices, and the sum of its interior angles is 3240 degrees.
Binary is a method of counting using just the digits 0 and 1, with the rule of carrying over when reaching two. Computers basically operate using this system.
A 'quadratic graph' usually refers to the graph of a quadratic function, which is shaped like a parabola. This is an important topic in middle school math and is mainly used to describe the curved relationship between variables.
A quadratic equation is a polynomial equation where the highest power of the unknown is 2. If it has only one unknown, it's called a single-variable quadratic equation; if it has two, it's called a two-variable quadratic equation. The main focus is on finding the roots of the equation and analyzing their properties.
The angles in a polygon mainly include two key concepts: interior angles and exterior angles.
A polygon is a closed shape made up of three or more line segments connected end to end. Depending on different criteria, it can be divided into regular and irregular polygons, as well as convex and concave polygons.
An obtuse triangle is a triangle that has one obtuse angle, meaning this angle is greater than 90 degrees but less than 180 degrees.