Save guides, add subjects and pick up where you left off with your BBC account. There are two ways to construct a triangle using a ruler and a protractor. The first is a Side, Angle, Side (SAS) ...
2D shapes are flat, plane shapes. Triangles have three sides and three angles that add up to 180°. Quadrilaterals have four sides and four angles that add up to 360°. Constructing triangles Learn how ...
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