* In creating figures that are the same size and shape as others (as in Question 1), learners are creating congruent figures. This also provides an opportunity for comparing the area of the different figures.
In addition, Emma indicated that students needed to have had "earlier discussions on congruent figures, which would help them to understand that if objects are the same shape and size they are congruent no matter which way they are turned."
He covers measuring line segments, measuring angles, the triangle inequality, congruent figures, triangle congruence tests, Isosceles triangles, straightedge and compass constructions, right triangles, parallelograms, and a wide variety of other related subject matter over the course of his thirty-three chapters.