1300 Math Formulas

CHAPTER 3. GEOMETRY

226.

O

~Ä

O

Ü

ê= = =

=

227. ~

Ä

S

Ä

~

U

~ Ä

Ü Å

OÜ

Å

~Ä

Å

N

O

Å

Qê

ÅÇ

OÜ

ÅÇ

o O O

O

+ +

+

= = = + = + = =

=

228. i=O()~+Ä =QÅ=

=

()

O

iê

èÜ ÅÜ

O

~ Ä ~Ä

Ü

O

~ Ä

p = = =

+

⋅ =

+

= ==

=

=

=

3.12 Trapezoid with Inscribed Circle

=

_~ëÉë=çÑ=~=íê~éÉòçáÇW=~I=Ä=

i~íÉê~ä=ëáÇÉëW=ÅI=Ç=

jáÇäáåÉW=è=

^äíáíìÇÉW=Ü=

aá~Öçå~äëW=Ç=NIÇO

^åÖäÉ=ÄÉíïÉÉå=íÜÉ=Çá~Öçå~äëW=φ=

o~Çáìë=çÑ=áåëÅêáÄÉÇ=ÅáêÅäÉW=ê=

o~Çáìë=çÑ=ÅáêÅìãëÅêáÄÉÇ=ÅáêÅäÉW=o=

mÉêáãÉíÉêW=i=

^êÉ~W=p=

=