CK-12 Geometry - Second Edition

http://www.ck12.org Chapter 2. Reasoning and Proof

3.Given:AE⊥ECandBE⊥EDProve:^61 ∼=^63

4.Given:^6 Lis supplementary to^6 M^6 Pis supplementary to^6 O^6 L∼=^6 OProve:^6 P∼=^6 M

5.Given:^61 ∼=^64 Prove:^62 ∼=^63

6.Given:^6 Cand^6 Fare right anglesProve:m^6 C+m^6 F= 180 ◦