Geogebra/C3/Theorems-on-Chords-and-Arcs/Khasi

Time	Narration
00:01	Khublei iaphi baroh. Ngi pdiang sngewbha iaphi sha kane ka jinghikai/tutorial shaphang ka Theorems on Chords and Arcs in Geogebra.
00:08	Ha kaba kut jong kane ka jinghikai/tutorial,
00:09	phi lah ban pynshisha ia ki theorems shaphang ka :
00:14	Chords jong ka circle.
00:16	Arcs jong ka circle.
00:18	Ngi tharai ba phi lah don ia ki jingtip ba kumno ka Geogebra ka treikam.
00:23	lada em , na bynta ki jinghikai ba iabiang , sngewbha leit ha ka website jong ngi: http://spoken-tutorial.org
00:30	Ban record ia kane ka jinghikai Nga pyndonkam da ka:
00:32	Ubuntu Linux OS Version 11.10
00:36	Geogebra Version 3.2.47.0
00:42	Ngin pyndonkam da ki Geogebra tools kiba harum:
00:47	Circle bad ka Center bad Radius
00:49	Circular Sector bad ka Center hapdeng Artylli ki Points
00:53	Circular Arc bad ka Center hapdeng Artylli ki points
00:56	U Midpoint bad
00:58	U Perpendicular line
01:00	Shah ngin open/plie ia ka GeoGebra window kaba thymmai.
01:02	Nion ha Dash home, Media Apps.
01:06	Hapoh Type, jied Education bad GeoGebra.
01:15	Shah ngin iathuh ia ka theorem:
01:17	"Ka Perpendicular na ka center jong ka circle sha ka chord ka bisects ia ka chord".
01:23	Ka Perpendicular na ka center A jong ka circle sha ka chord BC ka bisects ia ka.
01:32	Shah ngin pynshisha ia ka theorem.
01:37	Na bynta kane ka jinghikai , Ngan pyndonkam da k Grid layout ha ka jaka jong ka Axes.
01:42	Nion ha ka kadiang ha u drawing pad.
01:44	Hapoh ka Graphic view, uncheck ia ka Axes.
01:47	Jied ia ka Grid.
01:51	Shah ngin draw/dro ia ka circle.
01:54	Jied ia ka Circle with Center and Radius tool na u tool bar.
01:58	Mark ia u point A ha u drawing pad.
02:01	Ka dialogue box ka open/plie.
02:03	Shah ngin type ia u value 3 na bynta u radius.
02:06	Nion OK.
02:07	Ka circle bad ka center A bad u radius 3cm u lah draw/dro.
02:13	Shah ngin pynkhih ia u point A bad peit ia ka jingkhih jong ka circle.
02:19	Jied Segment between two points tool.
02:22	Mark ia ki B bad C ha ka circumference jong ka circle.
02:27	Ka chord BC ka lah draw/dro.
02:30	Shah ngin draw/dro ia u perpendicular line/lain sha ka chord BC kaba pass lyngba u point A.
02:35	Nion ha Perpendicular Line tool na u tool bar.
02:39	Nion ha ka chord BC bad ha u point A.
02:44	Shah ngin pynkhih ia u point B bad peit kumno u perpendicular line/lain u khih ryngkat bad u point 'B'.
02:52	U Perpendicular line bad chord BC ki ia kynduh ha u point.
02:56	Nion ha ka Intersect Two Objects tool.
02:58	Mark ia ki point jong kiba ia kynduh kum u D.
03:03	Shah ngin pynshisha lada u D u dei u mid point jong ka chord BC.
03:08	Nion ha ka Distance tool.
03:11	Nion ha ki points B, D ...D, C .
03:19	Phin iohi ba ki jingjngai/distances BD bad DC ki ia ryngkat.
03:24	Kaba mut u D u dei u midpoint jong ka chord BC
03:29	Shah ngin thew ia ka angle CDA.
03:33	Nion ha ka Angle tool.
03:35	Nion ha ki points C, D, A,
03:42	Ka angle CDA ka long '90' degrees.
03:46	Ka theorem ka lah pynshisha.
03:50	Shah ngin pynkhih ia u point C bad peit kumno ki jingjngai ki khih ryngkat bad u point 'C'.
04:03	Shah ngin save ia ka file mynta.
04:05	Nion ha File >> Save As.
04:08	Ngan type ia ka file name/kyrteng jong ka file kum ka circle-chord.
04:12	circle-chord.
04:16	Nion ha Save.
04:21	Shah ngin pynkhih sa sha ka theorem kaba bud.
04:28	"Ki Inscribed angles subtended da ka arc ba ia kajuh ki ia ryngkat".
04:34	Inscribed angles BDC bad BEC subtended da ka arc BC ba ia kajuh ki ia ryngkat.
04:44	Shah ngin pynshisha ia ka theorem.
04:48	Shah ngin open/plie ia ka Geogebra window kaba thymmai.
04:51	Nion ha File >> New.
04:55	Shah ngin draw/dro ia ka circle.
04:57	Nion ha ka Circle with Center through Point tool, na u toolbar.
05:01	Mark ia u point A kum ka centre,
05:04	bad nion biang ban ioh ia u point B.
05:10	Shah ngin draw/dro ia ka arc BC.
05:13	Nion ha ka Circular Arc with Center between Two Points.
05:17	Nion ha ki points A, B bad C ha ka circumference.
05:24	Ka arc BC ka lah draw/dro.
05:26	Shah ngin pynkylla ia ki properties jong ka arc BC.
05:30	Hapoh ka Algebra View,
05:32	nion ha ka kadiang ha u object d.
05:35	Jied ia ka Object Properties.
05:37	Jied ia ka Color kum ka green, nion ha Close.
05:46	Nion ha ka New Point tool, mark ia ki points D bad E ha ka circumference jong ka circle.
05:56	Shah ngin subtend ia artylli ki angles na ka arc BC sha ki points D bad E.
06:03	Nion ha ka Polygon tool,
06:05	nion ha ki points E, B, D, C bad E sa shisien , ban pyndep ia ka figure/dur.
06:18	Shah ngin thew/measure ia ki angles BDC bad BEC.
06:26	Nion ha ka Angle tool,
06:28	Nion ha ki points B, D, C bad B, E, C.
06:40	Ngin iohi ba ki angles BDC bad BEC ki ia ryngkat.
06:51	Shah ngin iathuh ia ka theorem kaba bud.
06:55	"Ka Angle subtended da ka arc ha ka center ka long arshah ia ki inscribed angles subtended da ka arc kaba ia kajuh".
07:06	Ka Angle BAC subtended da ka arc BC ha u A ka long arshah ia ki inscribed angles BEC bad BDC, kaba subtended da ka arc kaba ia kajuh.
07:22	Shah ngin pynshisha ia ka theorem.
07:26	Shah ngin draw/dro ia ka sector ABC.
07:30	Nion ha ka Circular Sector with Center between Two Points tool.
07:35	Nion ha ki points A, B, C.
07:45	Shah ngin pynkylla ia ka rong/color jong ka sector ABC.
07:48	Nion ha ka kadiang ha ka sector ABC.
07:51	Jied ia ka Object Properties.
07:54	Jied ia ka Color kum ka Green. Nion ha Close.
08:00	Shah ngin thew ia ka angle BAC.
08:04	Nion ha ka Angle tool , nion ha ki points B, A, C.
08:15	Ka Angle BAC ka long arshah ia ki angles BEC bad BDC.
08:28	Shah ngin pynkhih ia u point C.
08:32	Phin iohi ba ka angle BAC ka long barabor arshah ia ki angles BEC bad BDC.
08:41	Na kata ka daw ki theorems ki lah pynshisha.
08:45	Bad kane, ngi poi sha kaba kut jong kane ka jinghikai.
08:48	Shah ngin pynlyngkot.
08:53	Hapoh kane ka jinghikai, ngi lah pule ban pynshisha ba ka:
08:57	Perpendicular na ka center sha ka chord ka bisects ia ka
09:00	Ki Inscribed angles subtended da ka arc kaba ia kajuh ki ia ryngkat
09:06	Ka Central angle jong ka circle ka long arshah sha kano2 ka inscribed angle subtended da ka arc kaba ia kajuh.
09:15	Kum ka assignment, Nga kwah iaphi ban pynshisha
09:19	ba ki chords jong ka circle kiba ia ryngkat ki ia ryngkat ka jingjngai na ka center.
09:24	Draw/dro ia ka circle.
09:25	Jied Segment bad ka length kaba la ain a u point tool.
09:29	Pyndonkam ia u ban draw/dro ia artylli ki chords kiba ia ryngkat ka size.
09:33	Draw ia ki perpendicular lines na ka center sha ki chords.
09:37	Mark ia ki points jong kiba ia kynduh.
09:40	Measure/thew ia ki jingjngai jong ka perpendicular.
09:44	Ka output jong ka Assignment ka dei ban long kumne.
09:48	Peit ia ka video kaba lah ban ioh na kane ka url: http://spoken-tutorial.org/What is a Spoken Tutorial
09:51	Ka pynlyngkot ia ka Spoken Tutorial project.
09:53	Lada phim don ia ka bandwidth kaba biang , phi lah ban download bad peit ia ka.
09:58	Ka Spoken Tutorial Project Team :
10:00	ka pynlong ia ki workshops da kaba pyndonkam da ka spoken tutorials.
10:03	Ka ai certificates sha kito kiba pass ia ka online test.
10:06	Ia ki jingtip ba kham bniah , sngewbha write/thoh sha ka contact@spoken-tutorial.org.
10:14	Ka Spoken Tutorial Project ka dei ka bynta jong ka jingkren sha ki nonghikai project.
10:18	La kyrshan ia ka da ka National Mission on Education lyngba ka ICT, MHRD, Government jong ka India.
10:25	Ia ki jingtip ba kham bniah ha kane ka mission lah ban ioh na kane ka link.
10:29	Ine i dei i Riba Janai Meghalaya, signing off . Khublei Shibun ba phi lah iasoh.

Contributors and Content Editors

PoojaMoolya, Ribajanai, Thaw