No one. A triangle is not a theory.
The mathematics of a triangle are not theories they are facts. Some people that showed this to be so are Pythagoras and Euclid.
Galileo theorized the earth circled the sun.
an antonym for theorize is prove i found it at dictionary.com
Aufbau theorized that electrons travelled in energy shells, hence the Aufbau diagram...
William Graham Sumner theorized that human society is based on:
he theorized pangaea
he theorized on cupcakes
Yes
harry hess
Ernest Rutherford
nothing
Einstein
For any right triangle, the sum of the squares of the lengths a and b of the legs equals the square of the length c of the hypotenuse: a2 + b2 = c2. Pythagoras developed the theorem.