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Educational woodworking for home and school (1908)
Park, Joseph C. (Joseph Charles), b. 1872 · New York, The Macmillan company · leaf 307
1. Riqht(One right angle) Acute Obtuse 3. Isosceles(equal legs) JV \c ¥/ « Vo gy 3 VS Vv «5y N// < V Base (side) \ 2. Equi dteral (Equal sides) … Acute Obtuse 4. Scalene(Unequal legs and angles) Fig. 251. —Triangles.Woodwork (Manual training)
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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