In geometric terms, one line is said to be perpendicular to another when their angle of intersection is 90°
Right angle and rectangle are geometric terms.
width
Described in terms of its geometry, a rainbow is an arc of a circle.
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line
lines
line segment
In geometric terms, one line is said to be perpendicular to another when their angle of intersection is 90°
Right angle and rectangle are geometric terms.
curve
An intersection is the region of space that forms when two forms overlap (the intersection of two lines makes a point, the intersection of two planes makes a line, etc.). In set theory, it is the set formed when two or more sets overlap in terms of common elements. With respect to roads, it is the place where two roads cross each other.
An arithmetic-geometric mean is a mean of two numbers which is the common limit of a pair of sequences, whose terms are defined by taking the arithmetic and geometric means of the previous pair of terms.
segment
width
Points, lines and planes are precisely defined terms. These concepts have to be clearly delineated to form fundamental planks in geometry, and that's because as they do. In suggesting that they are undefined, we'd have to suspect everything that was built on them. No geometric figure could be discussed with any certainty unless the elements that make it up are clearly defined and understood.
Described in terms of its geometry, a rainbow is an arc of a circle.