ENHR

Geometry

Pictures for teaching geometry: angles and protractors, types of triangles and triangle centres, geoboards, pattern blocks and tangram. Click a picture to see it larger and download it.

Angles13Open the app

Protractor (0°–180°) Full protractor (0°–360°) Acute angle Right angle Obtuse angle Straight angle Reflex angle Full angle Adjacent angles Linear pair Complementary angles Vertically opposite angles Parallel lines and a transversal

Triangles13Open the app

Scalene triangle Isosceles triangle Equilateral triangle Acute triangle Right triangle Obtuse triangle Angles in a triangle add up to 180° Exterior angles of a triangle Altitudes of a triangle and the orthocentre Medians of a triangle and the centroid Perpendicular bisectors of a triangle and the circumcircle Angle bisectors of a triangle and the incircle Base and height of a triangle

Geoboard7Open the app

Square geoboard 5 × 5 Square geoboard 7 × 7 Square geoboard 11 × 11 Coordinate geoboard 11 × 11 Isometric geoboard Circular geoboard, 12 pegs Circular geoboard, 24 pegs

Pattern blocks5Open the app

All six pattern blocks Pattern blocks: hexagon made of halves, thirds and sixths Pattern blocks: honeycomb Pattern blocks: star Pattern blocks: dodecagon

Tangram22Open the app

Tangram: coloured square Tangram: square to cut out Tangram: rectangle Tangram: triangle Tangram: house Tangram: trapezoid Tangram: parallelogram Tangram: rocket Tangram: boat Tangram: fish Tangram: cat Tangram: cat 2 Tangram: house with a chimney Tangram: rabbit Tangram: dog Tangram: pig Tangram: goose Tangram: camel Tangram: shark Tangram: crab Tangram: seal Tangram: crocodile

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