Then/Now You identified isosceles and equilateral triangles. Use properties of isosceles triangles....

10
You identified isosceles and equilateral triangles. • Use properties of isosceles triangles. • Use properties of equilateral triangles.

TAGS:

Transcript of Then/Now You identified isosceles and equilateral triangles. Use properties of isosceles triangles....

Page 1: Then/Now You identified isosceles and equilateral triangles. Use properties of isosceles triangles. Use properties of equilateral triangles.

You identified isosceles and equilateral triangles.

• Use properties of isosceles triangles.

• Use properties of equilateral triangles.

Page 2: Then/Now You identified isosceles and equilateral triangles. Use properties of isosceles triangles. Use properties of equilateral triangles.

• legs of an isosceles triangle

• vertex angle

• base angles

Page 3: Then/Now You identified isosceles and equilateral triangles. Use properties of isosceles triangles. Use properties of equilateral triangles.
Page 4: Then/Now You identified isosceles and equilateral triangles. Use properties of isosceles triangles. Use properties of equilateral triangles.

Congruent Segments and Angles

A. Name two unmarked congruent angles.

Answer: BCA and A

BCA is opposite BA and A is opposite BC, so BCA A.

___

___

Page 5: Then/Now You identified isosceles and equilateral triangles. Use properties of isosceles triangles. Use properties of equilateral triangles.

Congruent Segments and Angles

B. Name two unmarked congruent segments.

Answer: BC BD

___BC is opposite D and BD is opposite BCD, so BC BD.

___

______ ___

Page 6: Then/Now You identified isosceles and equilateral triangles. Use properties of isosceles triangles. Use properties of equilateral triangles.
Page 7: Then/Now You identified isosceles and equilateral triangles. Use properties of isosceles triangles. Use properties of equilateral triangles.

Since QP = QR, QP QR. By the Isosceles Triangle Theorem, base angles P and R are congruent, so mP = mR . Use the Triangle Sum Theorem to write and solve an equation to find mR.

Find Missing Measures

A. Find mR.

Triangle Sum Theorem

mQ = 60, mP = mR

Simplify.

Subtract 60 from each side.

Divide each side by 2.Answer: mR = 60

Page 8: Then/Now You identified isosceles and equilateral triangles. Use properties of isosceles triangles. Use properties of equilateral triangles.

A. 30°

B. 45°

C. 60°

D. 65°

A. Find mT.

Page 9: Then/Now You identified isosceles and equilateral triangles. Use properties of isosceles triangles. Use properties of equilateral triangles.

A. 1.5

B. 3.5

C. 4

D. 7

B. Find TS.

Page 10: Then/Now You identified isosceles and equilateral triangles. Use properties of isosceles triangles. Use properties of equilateral triangles.

A. x = 20, y = 8

B. x = 20, y = 7

C. x = 30, y = 8

D. x = 30, y = 7

Find the value of each variable.


Use isosceles and equilateral triangles

Use isosceles and equilateral triangles

Holt McDougal Geometry Isosceles and Equilateral Triangles Prove theorems about isosceles and equilateral triangles. Apply properties of isosceles and.

Holt McDougal Geometry Isosceles and Equilateral Triangles Prove theorems about isosceles and equilateral triangles. Apply properties of isosceles and.

Isosceles and equilateral triangles - Congruence - Missing angle · x ∠ ∠ ∠ ∠ ∠

Isosceles and equilateral triangles - Congruence - Missing angle · x ∠ ∠ ∠ ∠ ∠

44-9-9Isosceles and Equilateral Triangles Isosceles … McDougal Geometry 4-9 Isosceles and Equilateral Triangles The congruent sides are called the legs. The vertex angle is the angle

44-9-9Isosceles and Equilateral Triangles Isosceles … McDougal Geometry 4-9 Isosceles and Equilateral Triangles The congruent sides are called the legs. The vertex angle is the angle

4-9 Isosceles and Equilateral Triangles Warm Up Lesson Presentation

4-9 Isosceles and Equilateral Triangles Warm Up Lesson Presentation

5.4 Equilateral and Isosceles Triangles · 1/5/2018  · 5.4 Equilateral and Isosceles Triangles Spiral Review: Sketch and correctly label the following. Sketch an Equilateral Triangle:

5.4 Equilateral and Isosceles Triangles · 1/5/2018  · 5.4 Equilateral and Isosceles Triangles Spiral Review: Sketch and correctly label the following. Sketch an Equilateral Triangle:

4.8 Use Isosceles and Equilateral Triangles

4.8 Use Isosceles and Equilateral Triangles

4.6 Isosceles Triangles. Objectives Use properties of isosceles triangles Use properties of equilateral triangles.

4.6 Isosceles Triangles. Objectives Use properties of isosceles triangles Use properties of equilateral triangles.

4.6 isosceles and equilateral triangles ink.notebook · 4.6 isosceles and equilateral triangles ink.notebook 2 November 06, 2017 Lesson Objectives Press the tabs to view details.

4.6 isosceles and equilateral triangles ink.notebook · 4.6 isosceles and equilateral triangles ink.notebook 2 November 06, 2017 Lesson Objectives Press the tabs to view details.

Holt Geometry 4-7 Isosceles and Equilateral Triangles 4-7 Isosceles and Equilateral Triangles Holt Geometry Warm Up Warm Up Lesson Presentation Lesson.

Holt Geometry 4-7 Isosceles and Equilateral Triangles 4-7 Isosceles and Equilateral Triangles Holt Geometry Warm Up Warm Up Lesson Presentation Lesson.

GEOMETRY: Chapter 4 4.6: Use Isosceles and Equilateral Triangles.

GEOMETRY: Chapter 4 4.6: Use Isosceles and Equilateral Triangles.

Isosceles and equilateral triangles. Warm Up 1. Find each angle measure. True or False. If false explain. 2. Every equilateral triangle is isosceles.

Isosceles and equilateral triangles. Warm Up 1. Find each angle measure. True or False. If false explain. 2. Every equilateral triangle is isosceles.

Name: Period: 5.1 Isosceles & Equilateral Triangles 1. Prove: the … 5 2016.pdf · 2016-07-27 · Name: _____ Period: _____ 5.1 Isosceles & Equilateral Triangles An altitude is a

Name: Period: 5.1 Isosceles & Equilateral Triangles 1. Prove: the … 5 2016.pdf · 2016-07-27 · Name: _____ Period: _____ 5.1 Isosceles & Equilateral Triangles An altitude is a

Isosceles and Equilateral Triangles Chapter 4 Section 5.

Isosceles and Equilateral Triangles Chapter 4 Section 5.

Triangle Angle Sum Theorem Isosceles Triangles Equilateral Triangle.

Triangle Angle Sum Theorem Isosceles Triangles Equilateral Triangle.

4-6 Isosceles and Equilateral Triangles

4-6 Isosceles and Equilateral Triangles

Isosceles and Equilateral Triangles

Isosceles and Equilateral Triangles

Isosceles and Equilateral Triangles · SWBAT: Apply Properties of Isosceles and Equilateral Triangles HW: Pages 22-23 40 40 x 𝒙+ + = x = 100 Title Isosceles and Equilateral Triangles

Isosceles and Equilateral Triangles · SWBAT: Apply Properties of Isosceles and Equilateral Triangles HW: Pages 22-23 40 40 x 𝒙+ + = x = 100 Title Isosceles and Equilateral Triangles

Geometry CH 4-2 Isosceles & Equilateral Triangles Prove theorems about isosceles and equilateral triangles. Apply properties of isosceles and equilateral.

Geometry CH 4-2 Isosceles & Equilateral Triangles Prove theorems about isosceles and equilateral triangles. Apply properties of isosceles and equilateral.

CH 4.7 USE ISOSCELES AND EQUILATERAL TRIANGLES. In this section… We will use the facts that we know about isosceles and equilateral triangles to solve.

CH 4.7 USE ISOSCELES AND EQUILATERAL TRIANGLES. In this section… We will use the facts that we know about isosceles and equilateral triangles to solve.