Reasoning about rates - yellow bowties I

Drag the YELLOW dots to adjust the angles of the bowtie. Drag the BLUE dot to shift the bowtie up and down. Drag the GREEN dot to shift the shape of the bowtie from left to right. The right hand panel shows the area of the bowtie. How does the area of the bowtie vary as you drag the GREEN and BLUE dots? How does the area of the bowtie vary with the angle(s) of the YELLOW dots?