Note the thumbnail below is a degraded version of the actual image which is much sharper. A Necker cube is basically a wireframe drawing of a six-sided cube such that it has no perspective as to whether you're looking at it from the top or from the bottom. This is an example of two exactly identical necker cubes, the one on the left showing an intermediate object going in "down from the top" while the one on the right shows the object going in "up from the bottom" which shows how the image can change its perspective simply by changing which face (front or back) appears behind the intervening object. 큐브 necker 큐브 착시 2 Necker 큐브
A set of 3 Geometry shapes floating in mid-air on a metallic platform. Drawn with Inkscape. 형상 형상 모양 형상 2
An example of a necker cube and an Impossible cube (one arm runs across the other but is still straight, which can't happen in 3D; it's an optical illusion). 큐브 necker 큐브 착시 Necker 큐브 및 불가능 한 큐브
The difference of two cubes. Typeface is Tuffy (public domain, created by Thatcher Ulrich) from openfontlibrary.org 큐브 새끼 차이 2 개의 입방체의 차이
A set of 3 Geometry Shapes floating in mid-air with a metallic floor and a metallic graph in the background. Drawn with Inkscape. 형상 형상 모양 기 4
library school music education text book math knowledge mathematics arithmetic learning wikibooks textbook Math Music Textbook clip art 수학 음악 교과서 도서관 학교 음악 교육 텍스트도 서 수학 지식 수학 산술 학습 위키책 교과서
symbol square number math mathematics letter-i i-square imaginary Imaginary Math Symbol clip art 상상 수학 기호 상징 광장 번호 수학 수학 편지 나 허수를 제곱
The magic constant of this square is 34. Besides its four corners sum 34, the four central number sum 34, the four middle numbers of upper and lower rows sum 34 like the four middle numbers of the columns left and right. If we divide the square into four squares have the numbers that make up each added 34. 광장 매직 수학 매직 스퀘어
A parabola on a Cartesian coordinate grid. Typeface is Tuffy (public domain, created by Thatcher Ulrich) from openfontlibrary.org 비유 수학 수학 비유