In the diagram, ST is parallel to UW, o, o, o and o. Calculate the value of y
- A.
20 - B.
25 - C.
45 - D.
65
Correct Answer: Option B
Explanation
xo + zo = 180o (sum of
45o + zo = 180o
zo = 180o – 45o
z = 135o
z + yo + 20o = 180o (sum of
135o + yo + 20o = 180o
yo + 155o = 180o
yo + 180o – 155o
yo = 25o