All three side measurements are given ... The perpendicular height of the triangle is 4 mm. The base of the triangle is perpendicular to its height. The base is 4 m. The working can be carried ...

have three sides, therefore they have three angles. Interior angles in a triangle sum to a half turn (180˚). Quadrilaterals close quadrilateralA polygon with four straight sides. have four sides ...

Come back to the three connected sides idea. Continue making the triangle different shapes and size so that the student see a variety. Triangles examples: differing orientations and sizes 4. Together ...

Rectangles, arches, and triangles are the most common shapes used to build big structures. What happens when you push the side of a rectangle? The rectangle is a wobbly, unstable shape.