CK-12 Geometry - Second Edition

http://www.ck12.org Chapter 4. Triangles and Congruence 30. SAS Write a 2-column proof. 31.Given:SV⊥WU Tis the midpoint ofSVandW ...

4.5. Isosceles and Equilateral Triangles http://www.ck12.org 4.5 Isosceles and Equilateral Triangles Learning Objectives Unders ...

http://www.ck12.org Chapter 4. Triangles and Congruence Isosceles Triangle Properties An isosceles triangle is a triangle that h ...

4.5. Isosceles and Equilateral Triangles http://www.ck12.org The base angles should each be 72. 5 ◦and the vertex angle should b ...

http://www.ck12.org Chapter 4. Triangles and Congruence Because 4 DEG∼= 4 F EG, we know that^6 EGD∼=^6 EGFby CPCTC. Thes two ang ...

4.5. Isosceles and Equilateral Triangles http://www.ck12.org 47 ◦+ 47 ◦+v= 180 ◦ v= 180 ◦− 47 ◦− 47 ◦ v= 86 ◦ Example 3:If an is ...

http://www.ck12.org Chapter 4. Triangles and Congruence Equilateral Triangles By definition, all sides in an equilateral triangl ...

4.5. Isosceles and Equilateral Triangles http://www.ck12.org From the Base Angles Theorem, the angles opposite congruent sides i ...

http://www.ck12.org Chapter 4. Triangles and Congruence ( 2 x+ 5 )◦+( 2 x+ 5 )◦+( 3 x− 5 )◦= 180 ◦ ( 7 x+ 5 )◦= 180 ◦ 7 x= 175 ◦ ...

4.5. Isosceles and Equilateral Triangles http://www.ck12.org 8. 9. 10. 11. 12. 13. 14. 15.^6 DEFin triangle 4 DEFis bisected byE ...

http://www.ck12.org Chapter 4. Triangles and Congruence Is 4 ABCisosceles? Explain your reasoning. 4 EQGis an equilateral trian ...

4.5. Isosceles and Equilateral Triangles http://www.ck12.org Fill in the blanks in the proofs below. 24.Given: Isosceles 4 CIS, ...

http://www.ck12.org Chapter 4. Triangles and Congruence 26.Given: Isosceles 4 ICSwith^6 Cand^6 SIOis the perpendicular bisector ...

4.6. Chapter 4 Review http://www.ck12.org 4.6 Chapter 4 Review Definitions, Postulates, and Theorems Interior Angles Vertex Tri ...

http://www.ck12.org Chapter 4. Triangles and Congruence 3. AAS 4. SSS 5. SAS Using the pictures below, determine which theorem, ...

http://www.ck12.org CHAPTER 5 Relationships with Triangles Chapter Outline 5.1 Midsegments of a Triangle 5.2 PERPENDICULARBISECT ...

http://www.ck12.org Chapter 5. Relationships with Triangles 5.1 Midsegments of a Triangle Learning Objectives Identify the mids ...

5.1. Midsegments of a Triangle http://www.ck12.org Solution:Find the midpoints ofABandBCusing your ruler. Label these pointsDand ...

http://www.ck12.org Chapter 5. Relationships with Triangles Example 4:Find the slopes ofNMandQO. Solution:The slope ofNMis−− 2 − ...

5.1. Midsegments of a Triangle http://www.ck12.org Because the midsegments are half the length of the sides they are parallel to ...