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Diagram showing how Surveyors by using Euclidean Geometry to m...
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Model of Globe with oranges sections raised above it - illustr...
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Lines of Longitude on a Sphere across the Equator at right ang...
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Karl Gauss discovered that usual Triangular Geometrical rules ...
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On Flat Surfaces the Angles of a Triangle add up to 180 degree...
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Electronic Measure
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Yellow platic ruler; calculator; pens; set square;
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Young measuring the ground with a long ruler.
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measuring tape
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An orange plastic ruler. (Also on the transparency is a pair o...
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Fifteen centimetre, clear plastic and purple ruler. Transparen...
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Radius and Diameter of Circle
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Height of Triangle
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Perimeter and Area of Rectangle
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Height and Radius of Cylinder
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