Suppose a parallelogram has base length

`B` \text{ `UNIT`}

and height `H` \text{ `UNIT`}

.What is the parallelogram's area?

graph.p = parallelogram(B, H, UNIT, SH);
graph.p.drawBase();
graph.p.drawHeight();

By moving a slice of the parallelogram, we can see that its area is equal to that of a rectangle with the same base and height.

graph.p.sliceHint();
graph.p.animHint();

area of rectangle ` = b \times h`

graph.p.drawArea();

`A = `

`B` \times `H` = `K`