"A mono-pitched roof, often referred to as a pent roof, shed roof, lean-to roof , and/or skillion roof (in Australia and New Zealand), is a single-sloped ...
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roof surface, often not attached to another roof surface. This is in contrast to a dual-pitched roof, also known as a gabled roof, which is pitched in two different directions." - (en.wikipedia.org 28.09.2019)