13

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5.4 Isosceles and Equilateral Triangles-2 · Theorem 4-5 Theorem If a line bisects the vertex angle Of an isosceles then the line is also the perpendicular bisector ofthe base. D

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Page 1: 5.4 Isosceles and Equilateral Triangles-2 · Theorem 4-5 Theorem If a line bisects the vertex angle Of an isosceles then the line is also the perpendicular bisector ofthe base. D

Warm Up

Page 2: 5.4 Isosceles and Equilateral Triangles-2 · Theorem 4-5 Theorem If a line bisects the vertex angle Of an isosceles then the line is also the perpendicular bisector ofthe base. D

Unit 5 - Triangle CongruenceLesson 5.4 Isosceles and equilateral

triangle

Page 3: 5.4 Isosceles and Equilateral Triangles-2 · Theorem 4-5 Theorem If a line bisects the vertex angle Of an isosceles then the line is also the perpendicular bisector ofthe base. D

Previous learning?O

ther important item

s:-hansenm

athwhs.w

eebly.com-rhansen2@

nsd.org-5.1, 5.2, 5.3 HW

due today

Page 4: 5.4 Isosceles and Equilateral Triangles-2 · Theorem 4-5 Theorem If a line bisects the vertex angle Of an isosceles then the line is also the perpendicular bisector ofthe base. D

Objectives

-To use and apply properties of equilateral and isosceles triangles.

Page 5: 5.4 Isosceles and Equilateral Triangles-2 · Theorem 4-5 Theorem If a line bisects the vertex angle Of an isosceles then the line is also the perpendicular bisector ofthe base. D

Wrapping up...2.4 Congruent triangles

Page 6: 5.4 Isosceles and Equilateral Triangles-2 · Theorem 4-5 Theorem If a line bisects the vertex angle Of an isosceles then the line is also the perpendicular bisector ofthe base. D

Wrapping up...2.4 Congruent triangles

*pg.20 in lesson 2.4*

Page 7: 5.4 Isosceles and Equilateral Triangles-2 · Theorem 4-5 Theorem If a line bisects the vertex angle Of an isosceles then the line is also the perpendicular bisector ofthe base. D

Page 8: 5.4 Isosceles and Equilateral Triangles-2 · Theorem 4-5 Theorem If a line bisects the vertex angle Of an isosceles then the line is also the perpendicular bisector ofthe base. D

Page 9: 5.4 Isosceles and Equilateral Triangles-2 · Theorem 4-5 Theorem If a line bisects the vertex angle Of an isosceles then the line is also the perpendicular bisector ofthe base. D

5.4 Isosceles & equilateral trianglesIsosceles Triangles

Page 10: 5.4 Isosceles and Equilateral Triangles-2 · Theorem 4-5 Theorem If a line bisects the vertex angle Of an isosceles then the line is also the perpendicular bisector ofthe base. D

Page 11: 5.4 Isosceles and Equilateral Triangles-2 · Theorem 4-5 Theorem If a line bisects the vertex angle Of an isosceles then the line is also the perpendicular bisector ofthe base. D

PracticeFind x and y.

1. 2. 3.

Using the diagram

below, complete each statem

ent. Explain why it is true.

4.

5.

Page 12: 5.4 Isosceles and Equilateral Triangles-2 · Theorem 4-5 Theorem If a line bisects the vertex angle Of an isosceles then the line is also the perpendicular bisector ofthe base. D

Got it?

Page 13: 5.4 Isosceles and Equilateral Triangles-2 · Theorem 4-5 Theorem If a line bisects the vertex angle Of an isosceles then the line is also the perpendicular bisector ofthe base. D

Homew

ork5.4 H

omework - pg.254-256 #

7-21odd, 31,33

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