Tuesday, December 04, 2018 Geometry Revision!.

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Presentation transcript:

Tuesday, December 04, 2018 Geometry Revision!

Distance between two points 2.Gradient of a line

3.Parallel and Perpendicular lines

Example Two points are plotted at A(1, –3) and B(4, 9). Find (i) the distance between the two points (ii) the gradient of the line AB (iii) the gradient of the line perpendicular to AB.

4.Midpoint between to two points

5.Equation of a line

Example Obtain the gradient of the line which passes through the points (-1, -4) and (4, 6)

Example Find the equation of the straight line passing through the points (-1, 4) and (1, -2)

6. Intersection of two lines Example Solve the following simultaneous equations by means of substitution and drawing the graph. a) b)

A level past paper question1 The Points A, B and C have coordinates (6, 6), (3, 5), (7, 3), respectively. The mid-point of BC is D. The line through B parallel to AC meets AD at E. Show that the equation of AD is And find the equation BE. b) Show that E has coordinates (4, 2) c) Show that BE and EC are perpendicular d) Find the area of triangle BEC.