geometry lesson 2a - moon valley high...

2A_AnglesAndTheirMeasures

1

September03,2012

GeometryLesson2AAnglesandTheirMeasuresTLWname,classify,andidentifythevertexandsidesofangles.

TLWapplytheangleadditionpostulateandangleterminologytosolveproblems.

MHS4.1.06(2008AZstandards)Solveproblemsusingangleandsidelengthrelationshipsandattributesofpolygons.

BellWork

Giventhefollowingsequence:a0 =1,a1 =2,a2 =5,a3 =8,a4 =11

Whichformulageneratesthegivensequence?

a) an=n+3

b) an=3n1

1.

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Giventhesequence:a0 =3,a1 =6,a2 =9,a3 =12,

Whichformulageneratesthegivensequence?

a) an=6n+3

b) an=3n+3

2.

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3. IfMisthemidpointofAB,whatarethecoordinatesofB?

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4. GivenM(5,8)isthemidpointofQR.ThecoordinatesofQis(10,1).WhatarethecoordinatesofR?

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5.WhatistheexactdistancebetweenCandD?

2A_AnglesAndTheirMeasures

2

September03,2012

Vertex RightAngledefinition example

ObtuseAngledefinition example

StraightAngledefinition example

AcuteAngledefinition example

Writethreenamesfortheangles,namethevertexandthesides.

names

vertex sides

classification:

2A_AnglesAndTheirMeasures

3

September03,2012

Writethreenamesfortheangles,namethevertexandthesides.

names

vertex sides

classification:

Writethreenamesfortheangles,namethevertexandthesides.

names

vertex sides

AngleAdditionPostulatedefinition example definition example

Adjacent

Apply the Angle Addition Postulate to find the measure of the unknown angle.

Apply the Angle Addition Postulate to find the measure of the unknown angle.

2A_AnglesAndTheirMeasures

4

September03,2012

Apply the Angle Addition Postulate to find the measure of the unknown angle.

Apply the Angle Addition Postulate to find the measure of the unknown angle.

Classification Definition Example

RightAngle

measures180o

Acute

Pleasetrashthenonadjacentangles

Attachments

MVLetterhead.doc

Dr. Jennifer Johnson

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