Geometry NotesWeek 2

Definitions

Not Right Angles

90°

C

B

A

Right Angles

Definitions

88°

C

B

A

Acute Angles

Not Acute Angles

Definitions

91°

C

B

A

Obtuse Angles

Not Obtuse Angles

DefinitionsVertical Angles

C

AD

F

Not Vertical Angles

BE

H

G

Definitions

Not Complementary Angles

H

GBE

Complementary Angles

BE

30°

60°

Definitions

Not Supplementary Angles

BE

H

G

Supplementary Angles 120°

60°BEl

m

6. Group DefinitionsLinear Angles

BE

F

R

Not Linear Angles

40° 140°80°

100°

Definitions

Not Angle Bisectors

Angle Bisectors

45°45°

20°

20°

BA

CD

E

F

G

H

BE BE

DefinitionsPolygons

Not Polygons

DefinitionsConvex Polygons

Concave Polygons

Definitions

What We Can Write

ABCD

BCDA

CDAB

DABC

What We Can’t Write

DBCA

ADBC

A

B

C

D

Why can’t we write it like this?

CAMP SITE

MACP TISE

PMAC TISE

ACPM ETIS

DefinitionsCongruent Polygons

C

P

M

A

E

T

I

S

3. Group DefinitionsWhich polygon is congruent to ABCD? Write the congruency statement?

ABCDE

QLMNP

100130 130

100130 130

A

E

D C

B

Q

P

N M

L

F

G

HJ

K

B

C

SF

G

DefinitionsEquilateral Polygons

Equiangular Polygons

DefinitionsRegular Polygons