geometry, straightedge-and-compass construction – also known as ruler-and-compass construction, Euclidean construction, or classical construction – is the...

trisection is a classical problem of straightedge and compass construction of ancient Greek mathematics. It concerns construction of an angle equal to one third...

a right triangle. The theorem is used in the following straightedge and compass constructions. The h 2 = p q {\displaystyle h^{2}=pq} version of the formula...

concerning compass and straightedge constructions having additional restrictions imposed on the traditional rules. This result, related to the rusty compass equivalence...

compass equivalence theorem is an important statement in compass and straightedge constructions. The tool advocated by Plato in these constructions is...

a surface plate must be used. An idealized straightedge is used in compass-and-straightedge constructions in plane geometry. It may be used: Given two...

of a given circle by using only a finite number of steps with a compass and straightedge. The difficulty of the problem raised the question of whether specified...

theorem states that any geometric construction that can be performed by a compass and straightedge can be performed by a compass alone. It must be understood...

constructible if it can be produced as one of the points of a compass and straightedge construction (an endpoint of a line segment or crossing point of two...

sometimes used as a way of obtaining a position line using a sextant when no compass is available. The horizontal angle between two landmarks defines the circumcircle...