3 undefined terms in geometry
TRANSCRIPT
UNDEFINED
TERMS in
GE METRY BY: Roselle B. Adem
RBA
Point
Does a point have any dimensions?
- Does it have length and width?
- Does it have an area
or volume?
𝒖𝒏𝒊𝒕2 𝒖𝒏𝒊𝒕3
- Does it have
directions?
Y e s , i t h a s .
B U T … i n g e o m e t r y , i t h a s
n o a c t u a l s i z e , o r a n y
d i m e n s i o n s . P o i n t i n g e o m e t r y ,
c a n ’ t b e m e a s u r e d .
DESCRIPTION It indicates
position or
location. Notation:
Use capital letter
Ex. point A, point O, etc.
A
A B
X
Y
O
P
K
L
M
N
S
R
Line
Does a l ine have any dimensions?
- Does it have length and width?
- Does it have an area or volume?
𝒖𝒏𝒊𝒕2 𝒖𝒏𝒊𝒕3
- Does it have
directions?
Y e s , i t h a s .
B U T … i n g e o m e t r y , i t o n l y
h a s l e n g t h . L i n e d o e s n o t h a v e
a n y w i d t h , a r e a a n d v o l u m e . I t
e x t e n d s i n d e f i n i t e l y i n b o t h d i r e c t i o n s .
DESCRIPTION A collection of
continuous points
that extends
indefinitely in
both directions. Notation:
1. Use 2 points on the line with a
line over the 2 letters.
Ex. AB
2. Using a lowercase of a letter
in italics. Ex. line m
m
“A line usually denoted as a segment
with arrows in both ends”.
Plane
A
B
D
C
DESCRIPTION A set of points contained in a
flat surface and extends
indefinitely in all direction. Notation:
By putting a capital letter on one
of the corners.
A
“A plane commonly denoted as a
closed four-sided figure”.
SUMMARY
Reference/s: www.regentsprep.org/regents/math/geometry/gg1/undefinedterms.htm https://books.google.com.ph/books?isbn=073867270X https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcS7sDGRmlpEdisH_0CkmVbtUqIUevyUe7BOeMOug9e_Qu-F-WMz https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcTbCHYuAxlq9yF8y4ZoUaHq8cf_K42eTp9Nk_6Jw8zRj8cine8G https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcTbCHYuAxlq9yF8y4ZoUaHq8cf_K42eTp9Nk_6Jw8zRj8cine8G https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcQwP9WF_UYFr7chA-corhHxY1uKWDUjMYJfFM_44-ua2ZXYKWRmCErVi-0a https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcQqVMD5n3rBPuir4mmnNIPuNObZS9bus1M8NqkLJK6K6rDo1hW_ww Alferez, M. & Lambino, A. 2007. Geometry. Quezon City, Philippines. MSA Publishing House.