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Mathematics
Mathematics
Problem
Lines
A
B
AB
A
B
and
C
D
CD
C
D
intersect at point
O
O
O
. The measure of one vertical angle is
(
3
y
+
10
)
∘
(3y + 10)^\circ
(
3
y
+
10
)
∘
and the measure of the other vertical angle is
(
7
y
−
50
)
∘
(7y - 50)^\circ
(
7
y
−
50
)
∘
. a. (i) Find the value of
y
y
y
. b. (ii) Write the common measure of these two angles.
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