http://www.ck12.org Chapter 4. Triangles and Congruence
3. AAS
4. SSS
5. SAS
Using the pictures below, determine which theorem, postulate or definition that supports each statement below.
6.m^61 +m^62 = 180 ◦7.^65 ∼=^66
8.m^61 =m^64 +m^63
9.m^68 = 60 ◦
10.m^65 +m^66 +m^67 = 180 ◦
11.^68 ∼=^69 ∼=^610
12. Ifm^67 = 90 ◦, thenm^65 =m^66 = 45 ◦
Texas Instruments Resources
In the CK-12 Texas Instruments Geometry FlexBook, there are graphing calculator activities designed to supple-
ment the objectives for some of the lessons in this chapter. See http://www.ck12.org/flexr/chapter/9689.