CK-12 Geometry - Second Edition

http://www.ck12.org Chapter 6. Polygons and Quadrilaterals Notice that each pair of sides is marked parallel. As is the case wit ...

6.2. Properties of Parallelograms http://www.ck12.org The diagonals bisect each other. Opposite Sides Theorem:If a quadrilater ...

http://www.ck12.org Chapter 6. Polygons and Quadrilaterals Solution:Opposite sides are congruent, so we can set each pair equal ...

6.2. Properties of Parallelograms http://www.ck12.org Solution:ADandSNbisect each other, soSY=Y N. 4 x− 11 =x+ 10 3 x= 21 x= 7 K ...

http://www.ck12.org Chapter 6. Polygons and Quadrilaterals 7. 8. 9. 10. 11. 12. 13. Use the parallelogramWAV Eto find: ...

6.2. Properties of Parallelograms http://www.ck12.org 14.m^6 AW E 15.m^6 ESV 16.m^6 W EA 17.m^6 AV W In the parallelogramSNOW,ST ...

http://www.ck12.org Chapter 6. Polygons and Quadrilaterals Fill in the blanks for the proof of theConsecutive Angles Theorem G ...

6.2. Properties of Parallelograms http://www.ck12.org 3x+x+ 3 x+x= 360 ◦ 8 x= 360 ◦ x= 45 ◦ 4x+ 2 = 90 ◦ 4 x= 88 ◦ x= 22 ◦ ...

http://www.ck12.org Chapter 6. Polygons and Quadrilaterals 6.3 Proving Quadrilaterals are Parallelograms Learning Objectives Pr ...

6.3. Proving Quadrilaterals are Parallelograms http://www.ck12.org Opposite Angles Theorem Converse:If the opposite angles of a ...

http://www.ck12.org Chapter 6. Polygons and Quadrilaterals TABLE6.7:(continued) Statement Reason 3.DB∼=DB Reflexive PoC 4 ABD∼= ...

6.3. Proving Quadrilaterals are Parallelograms http://www.ck12.org are congruent. To use the Parallelogram Diagonals Converse, y ...

http://www.ck12.org Chapter 6. Polygons and Quadrilaterals Solution: Let’s use the Parallelogram Diagonals Converse to determine ...

6.3. Proving Quadrilaterals are Parallelograms http://www.ck12.org 3. 4. 5. 6. 7. 8. 9. 10. ...

http://www.ck12.org Chapter 6. Polygons and Quadrilaterals 11. 12. For questions 13-15, determine the value ofxandythat would ma ...

6.3. Proving Quadrilaterals are Parallelograms http://www.ck12.org Given:AE∼=EC,DE∼=EBProve:ABCDis a parallelogram 21. Given:^6 ...

http://www.ck12.org Chapter 6. Polygons and Quadrilaterals Review Queue Answers 1.Opposite Sides Theorem Converse:If the opposit ...

6.4. Rectangles, Rhombuses and Squares http://www.ck12.org 6.4 Rectangles, Rhombuses and Squares Learning Objectives Define and ...

http://www.ck12.org Chapter 6. Polygons and Quadrilaterals SquareTheorem:A quadrilateral is a square if and only if it has four ...

6.4. Rectangles, Rhombuses and Squares http://www.ck12.org Diagonals in Special Parallelograms Recall from previous lessons that ...