Geometry Congruence

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Warning: No SSA Postulate

A

C

B

D

E

F

NOT CONGRUENT

There is no such thing as an SSA postulate!

Slide 15

Warning: No AAA Postulate

A

C

B

D

E

F

There is no such thing as an AAA postulate!

NOT CONGRUENT

Slide 16

The Congruence Postulates

Slide 17

Name That Postulate

SAS

ASA

SSS

SSA

(when possible)

Slide 18

Name That Postulate

(when possible)

ASA

SAS

AAA

SSA

Slide 19

Name That Postulate

(when possible)

SAS

SAS

SAS

Reflexive Property

Vertical Angles

Vertical Angles

Reflexive Property

SSA

Slide 20

HW: Name That Postulate

(when possible)

Slide 21

(when possible)

HW: Name That Postulate

Slide 22

Let’s Practice

Indicate the additional information needed to enable us to apply the specified congruence postulate.

For ASA:

For SAS:

B  D

For AAS:

A  F

Slide 23

HW

Indicate the additional information needed to enable us to apply the specified congruence postulate.

For ASA:

For SAS:

For AAS: