CK-12 Geometry-Concepts

http://www.ck12.org Chapter 2. Reasoning and Proof Guided Practice Use the given property or properties of equality to fill in t ...

2.8. Two-Column Proofs http://www.ck12.org 2.8 Two-Column Proofs Here you’ll learn how to write a two-column geometric proof. Wh ...

http://www.ck12.org Chapter 2. Reasoning and Proof Example A Write a two-column proof for the following: IfA,B,C, andDare points ...

2.8. Two-Column Proofs http://www.ck12.org Given: −→ BFbisects^6 ABC;^6 ABD∼=^6 CBE Prove:^6 DBF∼=^6 EBF First, put the appropri ...

http://www.ck12.org Chapter 2. Reasoning and Proof Example D TheSame Angle Supplements Theoremstates that if two angles are supp ...

2.8. Two-Column Proofs http://www.ck12.org MEDIA Click image to the left for use the URL below. URL: http://www.ck12.org/flx/ren ...

http://www.ck12.org Chapter 2. Reasoning and Proof 2. TABLE2.25: Statement Reason 1.^6 Lis supplementary to^6 M,^6 Pis supplemen ...

2.8. Two-Column Proofs http://www.ck12.org 5.Given:l⊥mProve:^6 1 and^6 2 are complements Use the picture for questions 6-15. Giv ...

http://www.ck12.org Chapter 2. Reasoning and Proof TABLE2.26:(continued) Statement Reason 2.m^6 ACH=m^6 ECH 2. Angle Addition ...

2.8. Two-Column Proofs http://www.ck12.org Transitive Property of Equality Substitution Property of Equality Addition Property ...

http://www.ck12.org Chapter 3. Parallel and Perpendicular Lines CHAPTER 3 Parallel and Perpendicular Lines Chapter Outline 3.1 P ...

3.1. Parallel and Skew Lines http://www.ck12.org 3.1 Parallel and Skew Lines Here you’ll learn about parallel and skew lines. Wh ...

http://www.ck12.org Chapter 3. Parallel and Perpendicular Lines For a line and a point not on the line, there is exactly one lin ...

3.1. Parallel and Skew Lines http://www.ck12.org PlanesABCandEF G, PlanesAEGandF BH, PlanesAEBandCDH Example C In the cube below ...

http://www.ck12.org Chapter 3. Parallel and Perpendicular Lines Guided Practice Use the figure below to answer the questions. Th ...

3.1. Parallel and Skew Lines http://www.ck12.org c. Longitude on a Globe d. The Golden Gate Bridge For 3-10, determine whether t ...

http://www.ck12.org Chapter 3. Parallel and Perpendicular Lines 3.2 Perpendicular Lines Here you’ll learn about perpendicular li ...

3.2. Perpendicular Lines http://www.ck12.org Investigation: Perpendicular Line Construction; through a Point NOT on the Line Dr ...

http://www.ck12.org Chapter 3. Parallel and Perpendicular Lines Notice that this is a different construction from a perpendicula ...

3.2. Perpendicular Lines http://www.ck12.org Perpendicular Transversals Recall that when two lines intersect, four angles are cr ...