8.2.3 Lines and Angles, PT3 Practice


Question 7:
In Diagram below, PWV is a straight line.

(a) Which line is perpendicular to line PWV?
(b) State the value of  ∠ RWU.

Solution:
(a) SW

(b) ∠ RWU = 13o + 29o + 20o = 62o

 


Question 8:
In Diagram below, UVW is a straight line.


(a) Which line is parallel to line TU?
(b) State the value of  ∠ QVS.

Solution:
(a) QV

(b) ∠ QVS = 8o + 18o = 26o

 


Question 9:
In Diagram below, find the value of x.

Solution:
40o + 80o + xo + xo = 180o
2xo = 180o – 120o
2xo = 60o
x= 30o
 x = 30


Question 10:
In Diagram below, PQR is an isosceles triangle and QRS is a straight line.
Find the values of x and y.

Solution:
P R Q = 180 o 110 o = 70 o P R Q = P Q R = 70 o y o = 180 o 70 o 70 o = 40 o y = 40 x o = 110 o 40 o = 70 o x = 70
 
 

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