Transcription of Practical Geometry Symmetry & Visualising Solid Shapes
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Practical Geometry Symmetry & Visualising Solid Shapes
Let a line l and a point P not lying on it be given. By using propertiesof a transversal and parallel lines, a line which passes through thepoint P and parallel to l , can be drawn. A triangle can be drawn if any one of the following sets ofmeasurements are given :(i)Three sides (SSS).(ii)Two sides and the angle between them (SAS).(iii)Two angles and a side (AAS) or (ASA).(iv)The hypotenuse and a leg in the case of a right-angled triangle(RHS). A figure has line Symmetry , if there is a line about which the figure maybe folded so that the two parts of the figure will coincide with each other. Regular polygons have equal sides and equal angles. They havemultiple ( , more than one) lines of Symmetry . Each regular polygon has as many lines of Symmetry as it has sides.
• Let a line ‘l’ and a point P not lying on it be given.By using properties of a transversal and parallel lines, a line which passes through the point P and parallel to ‘l’, can be drawn. • A triangle can be drawn if any one of the following sets of
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