Continuing our exploration, let’s replicate the
general right triangle in Figure 1.5 eight times, dropping all
algebraic annotations. Two triangles will then be fused
together in order to form a rectangle, which is shaded via
the same shading scheme in Figure 1.4. Figure 1.6 shows
the result, four bi-shaded rectangles mimicking the four bi-
shaded squares in Figure 1.4.