T
P
In the given figure, find ZPQR.
20 - XºR
X + 70°
S-
R
Q
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As EF is a transversal, we can say the following:
∠APQ=∠CQF (corresponding angles are equal) (1)
∠CQP+∠CQF=180
o
(linear pair of angles) (2)
x+y+z=180
o
(sum of angles of a triangle is 180
o
) (3)
Using (1):
30
o
+y=65
o
⟹y=35
o
Using (2):
65
o
+25
o
+z=180
o
⟹z=90
o
Using (3):
35
o
+90
o
+x=180
o
⟹x=55
o
Final answer:
x=55
o
,y=35
o
,z=90
o
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