http://www.ck12.org Chapter 4. Triangles and Congruence
TABLE4.4:
Statement Reason
- Reflexive PoC
- 4 ABC∼= 4 DCB 3.
- Is the pair of triangles congruent? If so, write the congruence statement and why.
Answers:
- Start with 4 ABC.
AB=
√
(− 2 −(− 8 ))^2 +(− 2 −(− 6 ))^2
=
√
( 6 )^2 +( 4 )^2
=
√
36 + 16
=
√
52 = 2
√
13
BC=
√
(− 8 −(− 6 ))^2 +(− 6 −(− 9 ))^2
=
√
(− 2 )^2 +( 3 )^2
=
√
4 + 9
=
√
13
AC=
√
(− 2 −(− 6 ))^2 +(− 2 −(− 9 ))^2
=
√
( 4 )^2 +( 7 )^2
=
√
16 + 49
=
√
65
Now find the sides of 4 DEF.