Test Index

WAEC Mathematics 2018 Paper

© africaexams.com

Question : 42

Total: 50

In the diagram, PQ//RS. Find x in terms of y and z

x = 240 $^o$ - y - z
x = 180 $^o$ - y - z
x = 360 $^o$ + y -z
x = 360 $^o$ - y - z

Solution:

In the diagram,

a = z (alternate angles)

b = 180 $^o$ - a (angles on a straight line)

b = 180 $^o$ - z

c = 180 $^o$ - x (angles on a straight line)

y = b + c (sum of oposite interior angles)

y = 180 $^o$ - z + 180 $^o$ - x

y = 360 $^o$ - z - x

x = 360 $^o$ - y - z

© africaexams.com

Go to Question:

Prev Question

Next Question