JAMB - Mathematics (1988 - No. 44)
In the figure, PQ is a parallel to ST and QRS = 40o. Find the value of x
55o
60o
65o
75o
คำอธิบาย
From the figure, 3x + x - 40o = 180o
4x = 180o + 40o
4x = 220o
x = \(\frac{220}{4}\)
= 55o
4x = 180o + 40o
4x = 220o
x = \(\frac{220}{4}\)
= 55o