...the method of superposition, similar to that used in Prop. 8. COB. Two right triangles are equal when the two legs of one are equal respectively to the two legs of the other. Proposition 1O. Theorem. 20. Two right triangles are equal when the hypotenuse and an adjacent angle...

...coincide in every respect and are equal (28). 20 BOOK I 53. THEOREM. Two right triangles are equal if the two legs of one are equal respectively to the two legs »f the other. Given : H t . AAB c ai i < 1 DEF : AC = UF; CB — -FE. , „ To Prove : A ABC' = A...

...coincide in every respect and are equal (28). 20 BOOK I 53. THEOREM. Two right triangles are equal if the two legs of one are equal respectively to the two legs of the other. Given : Rt. A ABC and DEF ; AC = DF; CB = FE. A n . To Prove : A ABC = A DEF. Proof: In the A ABC and...

...equal to each other. 27. Homologous parts of equal figures are equal. 53. Two right triangles are equal if the two legs of one are equal respectively to the two legs, of the other. 55. The angles opposite the equal sides of an isosceles triangle «re equal. 72. Two right triangles...