A = {2, 3, 5, 7}tcanright.macmate.me/Geometry_Channel/Part_1g/Part_1g_files/011i… · The union of...

A = {2, 3, 5, 7}

A = {2, 3, 5, 7} B = {1, 3, 5, 7, 9}

A = {2, 3, 5, 7} B = {1, 3, 5, 7, 9}

A B = {3, 5, 7} U

A = {2, 3, 5, 7} B = {1, 3, 5, 7, 9}

A B = {3, 5, 7} U

intersection

A = {2, 3, 5, 7} B = {1, 3, 5, 7, 9}

A B = {1, 2, 3, 5, 7, 9} Uunion

C

B

D

•

•

C

B

D

•

•

CB

CD

C

B

D

•

•

CB

CD

CDCB U = C

C

B

D

•

•

CB

CD

CDCB U = CCDCB

U

= C

•

A = {2, 4, 6, ...} B = {1, 3, 5, ...}

A = {2, 4, 6, ...} B = {1, 3, 5, ...}

A B = {1, 2, 3, ...} U

A = {2, 4, 6, ...} B = {1, 3, 5, ...}

A B = Ø U

A = {2, 4, 6, ...} B = {1, 3, 5, ...}

A B = Ø U

empty set

•

•

•L S

C

•

•

•L S

C

LS SC = SLS LC = LLC SC = C

UUU

•

•

•L S

C

LS SC = SLS LC = LLC SC = C

UUU

•

•

•

•L S

C

LS SC = SLS LC = LLC SC = C

UUU

•

•

•

•L S

C

LS SC = SLS LC = LLC SC = C

UUU

•

•

•

•L S

C

LS SC = SLS LC = LLC SC = C

UUU

LS U SC = SLS U LC = LLC U SC = C

•

•

•L S

C

LS SC = SLS LC = LLC SC = C

UUU

LS U SC = SLS U LC = LLC U SC = C

•

•

•L S

C

LS SC = SLS LC = LLC SC = C

UUU

LS U SC = SLS U LC = LLC U SC = C

•

•

•L S

C

LS SC = SLS LC = LLC SC = C

UUU

LS U SC = SLS U LC = LLC U SC = C

•

•

•L S

C

LS U SC U CL = LSC

•

•

•L S

C

UU

LS U SC U CL = LSCLS SC CL = Ø

•A

•T

•A

•T

AT

•A

•T

AT TA

•A

•T

AT TA

U

= AT

•A

•T

AT TA

U

= AT

AT TAU = AT

The union of two or more sets includes all things contained in

the sets.

The intersection of two or more sets includes those things

shared by the sets.