A roof may consist of a combination of various styles.
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Gable roof
This type of roof has a triangle on the side or front of the facade, which is formed by the straight slope declining from the ridge to eave.
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Hipped roof
This type of roof has an even roof to wall junction for the whole house and eaves on all sides.
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Hip and valley roof
This type of roof is used for an L or U shaped buildings. The valley is formed at the internal junction of the two roofs for L or U shaped buildings.
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Hipped roof with Dutch gables
This is a combination of a hipped roof and a gable ended roof.
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Skillion roof
This is a single pitched roof with rafters running from one wall to another.