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Geometry is used in surveying, navigation, astronomy and many practical
occupations. Astronomers use geometry to measure the distance from the
Earth to other planets, and chemists use it to comprehend the structure of
molecules. Geometrical drawings are widely used by surveyors, architects
and engineers. Navigation by sea and by air depends on accurate geometry.
In this chapter we will revise the angle facts of geometry, the main
features of triangles and quadrilaterals; and their use in solving
numerical problems.
Angle Facts of Geometry
You should be familiar with the following angle facts of geometry:
Example 1
Find the value of the pronumeral(s) in each of the following diagrams: |
