The first and second books of Euclid explained to beginners, by C.P. Mason

2nd Edit A B C A D and D B able added adjacent angle axiom base beginner bisected Book centre circle coincide Consequently construction contained describe diagonal difference direction divided double draw a straight Edition Elementary English equal equal respectively equal to twice equilateral exterior extremities Fcap figure follows formed geometry given point given straight line greater half impossible included intersecting Latin length less line A B magnitudes namely Notes opposite opposite sides pair parallel parallelogram placed position produced proof Prop proposition prove quantity rect rectangle rectangle contained remainders respect right angles right line right Z right Zs shown sides A C square suppose taken third three sides triangle unequal whole