This is a comparatively recent development however, as can be seen from the fact that modern geometry textbooks still use distinct terminology and notation for ratios and quotients.

We know from other references that Euclid's was not the first elementary geometry textbook, but it was so much superior that the others fell into disuse and were lost.

And the hoops could be combined to form what looked like illustrations from a geometry textbook magically come to three-dimensional life.

Thus, a geometry textbook is designed to have illustrations of equilateral triangles pointing out the correlation of sides to angles.

This I once attempted to do in a geometry textbook I wrote in the 1970's.

They are shaped like birthday cakes, rocket ships or illustrations from geometry textbooks.

The effect is a bit like a 1980's geometry textbook spazzing out and exploding on the wall.

And a customer must choose from shapes that are a geometry textbook come to life.

He came from the same island as Oenopides, and who was-as far as we know-the first to write a systematically ordered geometry textbook.

When Arnold cracks open his geometry textbook, he finds his mother s name written on the flyleaf.