who invented circle, triangle, square and rectangle?

Answer 1

As with all things, the Great Spirit. It then remained only for Man to learn about their properties and characteristics. As we are still doing with so many other things.

HTH

Doug

Answer 2

What do you mean? The words or the shapes?
If you are referring to the shapes, their origins are unknown. They were probably created by the people of the stone age. For example, the circle was invented for the wheel.
If you are referring to the terms, then
-triangle: Latin tri (three) angle (angle)
-squares and rectangles are English creations
-circle is also an English creation

Answer 3

No one in particular.

Geometric figures arose as abstractions of real-life forms. For instance, in calculating the area of farms, an area unit was needed; after trial and error, several (unknown) people came, independently, with a square as a result.

For circles, there are many circular, or near-circular, forms in nature; the idea of circle arose naturally from these forms.

As for triangles, I don't know; my guess is that ir appeared when dividing diagonally quadrilaterals. As for rectangles, my guess is construction: bricks need to be rectangular (or square) to form a good wall.

Answer 4

Euclid, the founder of Euclidean geometry, in his book Elements wrote about many definitions on geometry. He lived around 300 BC and arranged axioms and theorem about geometry.

Here are his definitions:

A circle is a plane figure contained by one line such that all the straight lines falling upon it from one point among those lying within the figure equal one another.

Rectilinear figures are those which are contained by straight lines, trilateral figures being those contained by three, quadrilateral those contained by four, and multilateral those contained by more than four straight lines.

Of quadrilateral figures, a square is that which is both equilateral and right-angled; an oblong that which is right-angled but not equilateral

Answer 5

Well, I am pretty sure that everyone without anyone telling them had an idea of shapes but didn't know how to describe their idea or how to name them. And it's probably the same with colors. This is only what I think, though.

Answer 6

They form naturally without needing to be invented.

Answer 7

I don't think anyone necessarily invented any of them, are you asking who helped in creating the mathematical formulas that support their existance?

Answer 8

i didnt... .what will u do by searchin for it... if u hate hate maths then for ur info.. he has already died..