A surfboard sail is roughly ___ in shape, with one curved side., triangle, triangular, A piston is basically a metal ___., cylinder, cylindrical, Scanners normally have ___ screens., rectangle, rectangular, Don’t cut that pipe with the hand saw. It’s quicker to use the ___ saw., circle, circular, This battery is the new ___ model. It’s exactly 30 × 30 × 30 cm., cube, cubic, This ball is not a perfect ___. It’s flattened at the poles., sphere, spherical, This racing car is in the shape of a ___., cone, conical, A protractor is a ___ instrument for measuring angles., semi-circle, semi-circular.

Activity 4

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