There are no geometry terms that start with the letter J. Geometry deals with the spatial relationships of objects.
Since this sentence is lacking a predicate, it is virtually impossible to answer. "Geometry words that start with r" is a legitimate noun phrase, but is so incomplete that it cannot be answered.
One geometry term that starts with the letter "J" is "juxtaposition," which refers to the placement of two or more geometric shapes or figures next to each other. Another term is "joint," which is the point where two or more line segments meet. "Jacobian" is a term used in calculus and geometry to refer to the determinant of the Jacobian matrix, which represents how a change in variables affects the orientation of a geometric shape.
Euclidean geometry, non euclidean geometry. Plane geometry. Three dimensional geometry to name but a few
There are different kinds of geometry including elementary geometry, Euclidean geometry, and Elliptic Geometry.
Bit of a strange question, if you mean How did it start, Euclid is often called the "father of geometry". Go to Wikipedia.org, "The World's Encyclopedia" and search geometry they will have a history section.
There are no geometry terms that start with the letter J. Geometry deals with the spatial relationships of objects.
Presumably at the birth of the Universe.
Geometry
eicosohedron
right.
Presumably at the birth of the Universe
altitude
Tangent.
Starting from around 3rd-4th grade, you start to learn really basic geometry. But around 8th or 9th grade, you actually start to learn more advanced geometry that uses theorems and postulates and proofs.
Skew
x-axis maybe?