Question

A) Work out the size of angle x.

A
1000
b) Give reasons for your answer.
B
D
ת
xo
F
H
G

Answer 1

x = 80

Explanation:

∠ ABC and ∠ DBC are adjacent angles and supplementary, thus

∠ ABC = 180° - ∠ DBC = 180° - 100° = 80°

∠ EFB = x = ∠ ABC = 80° ( corresponding angles )

Thus x = 80