The interior angles of an isosceles triangle (right triangle) are two equal angles of 45 degrees and one angle of 90 degrees. This means that the triangle can be divided into two equal right triangles, each with angles of 45 degrees, 90 degrees, and 45 degrees. Since the angles of each triangle are all multiples of 45 degrees, the triangles can be arranged in a grid pattern to form a tessellation.
