b To reflect a point across the y-axis, we draw segments from the point towards and perpendicular to the y-axis.
By extending these segments to the opposite side of the y-axis and with the same length as the first, we have reflected the point across the y-axis.
The area of a trapezoid is calculated by multiplying its height with the sum of its parallel sides, divided by 2.
A=1/2h(b_1+b_2)
Let's identify these dimensions in ABB'A' and calculate the area.
