Everything Maths Grade 10

4.Given the figure below:

A C G

D

E

F

B

x

s

r

p

y

135 ◦

55 ◦

a)Find each of the unknown angles marked in the figure below. Find a reason that leads to the answer

in a single step.

b)Based on the results for the angles above, isEF∥CG?

5.Given the figure below:

L N R

O

P Q

M

a

b

c

d

140 ◦ e

50 ◦

a)Find each of the unknown angles marked in the figure below. Find a reason that leads to the answer

in a single step.

b)Based on the results for the angles above, isP Q∥N R?

6.Determine whether the pairs of lines in the following figures are parallel:

a)

P R

O

S Q

T

A

B

2

1

3

115 ◦

2

(^13)
55 ◦
Chapter 7. Euclidean geometry 241