Einstein`s theory of relativity is E=MC2, This means that energy equals mass, times the speed of the light squared.

爱因斯坦相对论公式是E=MC2，意思是能量等于质量乘以光速的平方。

The Pythagorean equation is A squared plus B squared equals C squared. This means for all right angle triangles, the squared on the hypotenuse is equal to the sum the squares on the other 2 sides.

勾股定理的等式是A2+B2=C2。意思是直角三角形斜边的平方等于两直角的平方和。

Π is the circumference dividedby the diameter of any circle. It`s impossible to know the exact value. ButΠis approximately 3.14159265358979328462······

Π等于任何圆的周长除以其直径，无法直到它的确切值，但是Π接近于3.14159265358979328462······