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(1) THIS book is a collection of 3500 examples in ele-JL mentary algebra up to quadratic equations. It will prove useful to those teachers who dictate the book-work instead of leaving their pupils ...
This group discusses objects associated with plane geometry. For a collection of materials relating to spherical trigonometry, see the web object group Trigonometry for the Sphere.
It is a little difficult to see precisely wherein the real divergence lies, for the book begins, as usual, with the measurement of angles, the use of signs in geometry and orthogonal projection.