It can be manufactured as a circular shape, half-circular, quarter-circular, oblong, etc.

In some implementations, the injection sources can include a have semicircular cross-section.

linked the central ditch and the west arm of the northern circuit,

The semicircular form is the best for the amphitheatre.

The uniqueness is dome-shaped houses, namely round semicircle.

Channels (25) between the teeth (24a) may vary in shape, including half-circular, ovular or rectangular.

The guiding slot (21, 24, 25, 29) can be e.g. half-circular, droplet-shaped or triangular.

The container (10) is formed by a semi-circular base (14) and side walls (15 and 16) and a downstream end wall (17).

At the periphery of each semicircular disk (2) are arranged two quarter circle ring segments (3) that can slide along the circular arc periphery of each semicircular disk (2).

It was rebuilt during the 2nd century AD, larger and on a semi circular plan.

The upper half-shell (20) comprises a semicircular body, for gripping during the operation, a transversal opening at one end and a funnel-shaped neck at the other.

The main door of the Church is located at the central bay, below a round arch.

The nave ends in a semicircular apse of section and slightly smaller height.

Each apse had two large radial buttresses, which squared off its semi-circular shape.[37]

Each apse had two large radial buttresses, which squared off its semi-circular shape.[19]