## Lessons on form; or, an introduction to geometry, etc. [With a preface by C. Mayo.] |

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a b c acute angles added adjacent angles a b c base bisect Book bounded called centre chords circle circumference cloth common curved demonstration describe diagonal diameter double draw drawn edges Edition English equal equilateral exterior angle extremities faces figure four Geometry given GRAMMAR greater Greek Hence interior intersect join known Language Latin less LESSON likewise lines a b M.-Hence M.-What master meet object observe obtuse angle opposite opposite angles P.-They parallel parallelogram passes perpendicular plane angles produced PROFESSOR pupils quadrilateral figure rectangle rectangle contained remaining respecting right angles Schools sides similar slates solid angles sphere square straight line subtending surface tangent third Translation triangle truth twice the rectangle unequal whole writing