Answer:
x = 32
Step-by-step explanation:
An isosceles trapezium is one in which non-parallel sides have equal measure.
For an isosceles trapezoid, it is a rule that the two opposite angles equal 180°
∴ 2x + 20 3x = 180
solving the above equation:
2x + 3x = 180 - 20
5x = 160
x = 160 ÷ 5
x = 32
