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The document discusses different types of brick masonry junctions formed at acute and obtuse angles. It describes squint junctions, which occur when an internal wall meets an external wall at a non-90 degree angle. Squint junctions are usually formed at 45 degrees. It also discusses two types of quoins: right-angled square quoins and squint quoins, which can be acute or obtuse. Acute squints form interior angles less than 90 degrees, often 60 degrees, while obtuse squints form interior angles greater than 90 degrees, commonly 120 degrees. Diagrams show how to construct different junctions in English bond and double Flemish bond masonry walls.
