A hand written concise cheatsheet perfect for 2 minute revision of the complete Straight Lines chapter. Includes content on bisectors, line equations, family of lines, types, angle and area between lines, reflection of lines and much more.
STRAI GHT LINES
SECTION FORMULAE n mgrmalwm 92 by
b} sa a
f m Y4n i , m4 my, mumad
luulyon
m m
m, E CUm
ngLE B/w 2L/NES
Ym-r m -h d Dg
Md-þeumt-(1, ,¥ ) tom , m
CENTROD OF A A Fo _puwalll wns
Ty,
3 Yt9tY) 0 -0 = 1 M, TD2
1NCENTRE OFD 4 , Mz
E
faxt ba, +2 a+ byt y)
Ab +c
atb+c
.For 2 pvrhirdiulan uns
6 T T m,m = -
ExCENTRES =/a,+bx, +0X, -ayt byat y)& so dn
-atbtl -abtc FAMILY OF LINES
1AREA PA RALLEL LINES y:mz 4(>por om
Tyiomgl houmg wvs z,, )(x,y.) 3 y,) efERPENDI (ULAR S ax+ bytC =o
t bz ay + =0
2 (2.73t3, Yg +3,)- (,3, +1.%*)].co NCU RRENT Y= xtc
LINE PAsSIvh THRoVGu ZNTERSECTIOM CF
Ty imgsmud y (=m, 4,y,= m,a4) ,*mx+ (,)L, ANO 7 4t /*0
Triomu omud y 474 by+l <0 L s . 2 (abl
Rh pmu wmd uy ax*bytc =b 2 Juu.
Parallelegtom ly A1n4 byy re,&,) =o LENn7h AN DD FOU7 0F L THR0
UGH
4by + (4,e d)=0 LENTM 14, 2t b t (,9)
C dda a +
a,b2- b , FoUT = -
( ax +by tc)
RUATI ONS OF STRAIGGHT UNES a+b2
umpial eguaton
Le- mivpt sm =7 y mAtC
REFLECTIONAND DI5 TA NCE
b
Distomau utuun Juuohoys Jz,-7,)+9-
fmbloh tprm )m 2-X, Diasonnu Juluun C-2)
un point wm ) (x- 7 ) :( - ) (4 - y1) PMadluimy a+b
( ) Duai o n
wum a þamtand
Nsme Agm =) 1 U0d +y md =
lltgn
P nah dL m'0 to u amd d id m_a imi. 2 ax+by, +
Va+
Ju bn ond b
E (1,y)au uO hords om a+
d r u uduwn hu 1 hoimds Rullu ion e (3,y,) im
1 CoNVERSIO NS Xwms (2 z,,-v.) YaxIS= (-7,,.)
( , X , ) 8ain( V,)
Ma b -e/b PoSTI ON OE PoINTS
m imej l + (a t by,+) (41,t by, + c) >0 (sona pa
(ax+ by, +) (a1, +by, +c) <0
(opo
im vYpt =
-C
yimtvupt = -cb (ax,tby, +) (a1+ by, +c) 0 (amy
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