http://www.ck12.org Chapter 4. Triangles and Congruence
- 4 ABC:A(− 1 , 5 ),B(− 4 , 2 ),C( 2 ,− 2 )and 4 DEF:D( 7 ,− 5 ),E( 4 , 2 ),F( 8 ,− 9 )
- 4 ABC:A(− 8 ,− 3 ),B(− 2 ,− 4 ),C(− 5 ,− 9 )and 4 DEF:D(− 7 , 2 ),E(− 1 , 3 ),F(− 4 , 8 )
- 4 ABC:A( 0 , 5 ),B( 3 , 2 ),C( 1 , 4 )and 4 DEF:D( 1 , 2 ),E( 4 , 4 ),F( 7 , 1 )
- 4 ABC:A( 1 , 7 ),B( 2 , 2 ),C( 4 , 6 )and 4 DEF:D( 4 , 10 ),E( 5 , 5 ),F( 7 , 9 )
- Draw an example to show why SS is not enough to prove that two triangles are congruent.
- If you know that two triangles are similar, how many pairs of corresponding sides do you need to know are
congruent in order to know that the triangles are congruent?