Constructing a circle.
Arc 90°
Arc 180°
Arc 360°
A straight line extending from the center of a circle to the circumference.
A straight line passing from side to side through the center of a circle.
A straight line that joins any two points on a circle.
Eight [8] 45° slices.
Sixteen [16] 22.5° slices.
Thirty-two [32] 11.5° slices.
A symbol formed two circles of the same radius that intersect in such a way that the center of each circle lies on the circumference of the other.
A vesica piscis plus center cross.
No comment.
Exposing a tetrahedron and four [4] equilateral triangles.
Two overlapping equilateral triangles.
Two [2] overlapping hexagons generating ten [10] equilateral triangles.
Locating various triangles.
An intersection of two sets; A ∩ B.
An union of two sets; A ∪ B.
An symmetic difference of two sets; A Δ B.
A relative complement of A (left) in B (right); Ac ∩ B = B\A.
Touch to begin
