<s>
The	B-Application
Geometer	I-Application
's	I-Application
Sketchpad	I-Application
is	O
a	O
commercial	O
interactive	B-Application
geometry	I-Application
software	I-Application
program	O
for	O
exploring	O
Euclidean	O
geometry	O
,	O
algebra	O
,	O
calculus	O
,	O
and	O
other	O
areas	O
of	O
mathematics	O
.	O
</s>
<s>
Nicholas	O
Jackiw	O
,	O
a	O
student	O
at	O
the	O
time	O
,	O
was	O
the	O
original	O
designer	O
and	O
programmer	O
of	O
the	O
software	O
,	O
and	O
inventor	O
of	O
its	O
trademarked	O
"	O
Dynamic	B-Application
Geometry	I-Application
"	O
approach	O
;	O
he	O
later	O
moved	O
to	O
Key	O
Curriculum	O
Press	O
,	O
KCP	O
Technologies	O
,	O
and	O
McGraw-Hill	O
Education	O
to	O
continue	O
ongoing	O
design	O
and	O
implementation	O
of	O
the	O
software	O
over	O
multiple	O
major	O
releases	O
and	O
hardware	O
platforms	O
.	O
</s>
<s>
Present	O
versions	O
run	O
Microsoft	B-Application
Windows	I-Application
and	O
Mac	B-Operating_System
OS	I-Operating_System
8	I-Operating_System
.	O
</s>
<s>
It	O
also	O
runs	O
on	O
Linux	B-Application
under	O
Wine	B-Application
with	O
a	O
few	O
bugs	O
.	O
</s>
<s>
There	O
was	O
also	O
a	O
version	O
developed	O
for	O
the	O
TI-89	B-Device
and	O
TI-92	B-Device
series	I-Device
of	O
Calculators	O
.	O
</s>
<s>
The	B-Application
Geometer	I-Application
's	I-Application
Sketchpad	I-Application
includes	O
the	O
traditional	O
Euclidean	O
tools	O
of	O
classical	O
geometric	O
constructions	O
.	O
</s>
<s>
The	B-Application
Geometer	I-Application
's	I-Application
Sketchpad	I-Application
can	O
measure	O
lengths	O
of	O
segments	O
,	O
measures	O
of	O
angles	O
,	O
area	O
,	O
perimeter	B-Application
,	O
etc	O
.	O
</s>
<s>
Built	O
on	O
the	O
foundation	O
of	O
The	B-Application
Geometer	I-Application
's	I-Application
Sketchpad	I-Application
,	O
(	O
WSP	O
)	O
began	O
as	O
part	O
of	O
the	O
NSF	O
DRK-12	O
funded	O
.	O
</s>
