Geogebra/C2/Angles-and-Triangles-Basics/Khasi

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Time Narration
00:00 Khublei ia phi baroh. Ngi pdiang sngewbha ia phi sha kane ka Geogebra tutorial Angles and Triangles Basics.
00:06 Lada kane ka dei ka sien ba nyngkong ba phi pyndonkam ia ka Geogebra, sngewbha peit ia ka Introduction to Geogebra tutorial ha ka website spoken tutorial.
00:14 Ban sdang ia ka Geogebra, Nga pyndonkam da ka Linux operating system Ubuntu Version 10.04 LTS bad Geogebra Version 3.2.40.0.
00:24 Ka jingthmu jong kane ka jinghikai ka long ban pynshisha ba ka sum jong ka interior angles jong ka triangle barabor ka long 180 degrees, da kaba pyndonkam da ka Geogebra.
00:33 Ha kane ka jinghikai , ngin pule kumno ban pyndonkam ia ki tools Polygon, Angle, Insert Text.
00:42 Mynta nyngkong, jied ia ka 'Polygon' tool. Ban dro ia ka polygon, ha kane ka kynti ka triangle, jied ia ki lai tylli ki vertices da kaba click ha u drawing pad. Nangta pat nion ha ka vertex ba nyngkong.
00:57 Ban thew ia ki angle ba shapoh jong ka triangle, jied ia u 'Angle' tool. Phi lah ban thew ia ka angle ha ki artylli ki rukom. Click clockwise ia ki lai tylli ki vertices A, B nangta C. Kane ka thew ia ka angle ABC uba kyrteng u alpha.
01:15 Ka rukom kaba ar ka long ban jied ia ki line segments kiba pynlong ia ka angle. Jied ia u segment a bad segment b, ha kane ka kynti anti-clockwise ban ioh ia ka angle BCA ba kyrteng beta.
01:27 Kumjuh ruh, CAB yn thew ia ka angle gamma.
01:35 Phin iohi ba baroh ki angles la jer kyrteng katkum ka standard mathematical convention kum ki Greek alphabets.
01:41 Shuh shuh lada phi jied ia ki vertices anti-clockwise kumne , C B A, te la thew ia ka angle ba shabar.
01:53 Ban thep ia ki text ha ki drawing pad ki jongphi, pyndonkam da u Insert Text Tool. Nangta nion haei haei ha ka drawing pad, ka text window ki mih.
02:07 Mynta ban pyni ia ka angle ABC, Ngan type hapoh ki double quotes, Angle ABC =, khang noh ki double quotes, add + bad nangta click ha u alpha. Click OK. Kumta nga ioh ia ka value jong ka Angle ABC.
02:28 Kumjuh ruh, ban leh ia ki arithmetic, ban pyni ia ka sum jong ka interior angles jong kane ka triangle, Click ha u 'Insert Text' tool, Click hangne ha u drawing pad.

Type, hapoh ki double quotes, Sum of the interior angles of triangle ABC =khang noh ia ki double quotes plus (+) open brackets type alpha + beta + gamma close brackets. Bad click OK. Mynta phin iohi ia ka sum ba la pyni.

03:14 Hadien kata jied ia u Move' tool bad pynkhih ia ki free objects, ha kane ka kynti ki vertices A B lane C, bad phin iohi ba ka sum jong ka interior angles barabor ka long 180 degrees.
03:32 Ka bynta kaba nga sngewtynnad ha kane ka jinghikai ka long ban pyni, kumno ba baroh lai tylli ki vertices ki long ha u straight lain, pynduna ia artylli ki interior angles sha u nod bad kaba lai ka long 180 degrees kumne , ka straight angle.
03:52 Nangta ngin pule sa artylli ki bynta , ki drawing pad properties bad kumno ban delete ia ki object hapoh ka Geogebra.
04:04 Nyngkong ki drawing pad properties. Right click hangno hangno ha u drawing pad bad nangta click ha u Drawing Pad.
04:14 Ka Drawing Pad properties window ki plie. Phi lah ban pynkylla ia ka background colour jong ki drawing pad hangne.
04:20 Phi lah ban pynkylla ia ki properties jong ki axes hangne, ia baroh ar kata u X axis bad u Y axis hangne bad phi lah ban pynkylla hangne ia ki properties jong ka grid .
04:31 Khyndiat eh ki properties ban peit ki long, ki unit phi lah ban add na bynta ki axis, ki labels phi lah ban add na bynta ki axis, bad u X axis sha ka ratio u Y axis.
04:43 Haba ngi leh ia ki simple geometry bunsien ngi kwah ban buh ha ka 1:1 ratio.
04:49 Haba phi khang noh baroh ki jingpynkylla ba la leh yn sa saved.
04:54 Mynta , ban delete ia ka object ha u drawing pad, pynkynriah ia u mouse shalor ka object. Ngan pynkynriah ia u halor ka external angle, right click Phin iohi ba ka kyrteng jong ki object ka paw hangne bad nangta click ha u Delete, hadien kata ka object ka jah noh.
05:15 Kawei pat ka lad ban delete ia ki object ka long ban jied ia ki object ha ka algebra view, right click haka bad lehse Delete.
05:25 Peit thuh haba nga delete ia ka angle gamma, kane ka text ruh ka jah. Ka long namar ba ka shong katkum ka angle gamma.
05:35 Lada nga kwah ban undo ia kaei kaba nga lah delete, shu Edit bad click Undo lane nion Ctrl+ Z.
05:45 Ban delete shibun tylli ki objects hapoh ka Geogebra ka rukom basuk eh ban leh ka long shu left click hangno hangno ha ka drawing pad, tan ia u mouse sha baroh ki object kiba phi kwah ban delete, ynnai click shuh, baroh ki items la jied ia ki bad nangta nion 'Delete' ha ka keyboard jongphi.
06:05 Sa shisien to ngin undo biang da kaba click Undo.
06:10 Mynta, Nga kwah ban batai ia ka syntax jong ka text sa shisien.
06:17 Ki Text kiba donkam ban paw ki dei ban long hapoh ki double quotes ”” kumba la iohi ha ka nuksa.
06:25 Na ka bynta ki values jong ka Geogebra variables, pyndonkam da ki variable khlem ki quotes kumba ngi iohi hapoh ka algebra view.
06:34 Ban leh ia ki arithmetic bad ki values pyndonkam da ki variables hapoh brackets ().
06:40 Khatduh eh, ban pynlong lang lane ban pyniasoh ia ki text pyndonkam da u + sign.
06:46 Nangta, ngin peit khyndiat ia ki rukom ban pyniahap ia ki rong jong ki angles bad ki text.
06:59 Mynta lada nga kwah ban pynkylla ia ka rong jong ki text Ngan right click bad lehse Object Properties, leit sha ka Color bad pynkylla ia ki rong bad ong Close.
07:12 Mynta nga lah ban leit sha ka angle hangne, right click bad ong Object Properties. Nga lah ban jied ia ka recent window hangne bad click ha kane ka rong na ka bynta ban ioh ia ka juh ka rong.
07:26 Kumjuh ruh, lada nga kwah ban zoom in bad zoom out nga pyndonkam da u Zoom In hangne ban zoom in bad u Zoom Out option bad click ha u drawing pad ban zoom out.
07:47 Ban pynkylla ia ka angle unit, Nga lah ban leit sha ka Options, Angle unit bad pynkylla na ka Degrees sha Radians.
08:02 Te ban shu batai lyngkot, Nga lah nang kumno ban pynkylla ia ka jingthew ka angle na ka radians sha ka degrees, Nga lah ban zoom in bad zoom out.
08:15 Mynta sha ka ASSIGNMENT.
08:19 Dro ban pynshisha ba ka exterior angle jong ka triangle ka ia ryngkat bad sum jong ka opposite interior angles.
08:28 Leh ia ki synjam harum: Dro ia ka triangle da kaba pyndonkam da u Polygon tool.
08:32 Pyniar kawei na ki sides da kaba pyndonkam da u lain lyngba artylli ki points tool.
08:36 Pyndonkam da u Angle tool ban thew ia ka exterior angle bad ka opposite interior angles.
08:41 Pyndonkam da u Insert Text tool ban pyni ia kaba mih. Pynshisha ia kine da kaba pyndonkam da u Move tool bad pynkhih ia ki free objects.
08:49 Ngan pyni iaphi kaei kaba nga la leh .Phi donkam ban pyndonkam da u Move tool bad nangta pynkhih ia ki Free objects.
08:57 Phin iohi ba ka exterior angle barabor ka ia ryngkat bad ka sum jong ka interior opposite angles.
09:08 Nga kwah ban pyntip ba ka spoken tutorial project kadei shi bynta jong ka Talk to a Teacher project.
09:14 La kyrshan ia ka da ka National Mission on Education through ICT,MHRD Sorkar India.
09:20 Phi lah ban iohi shibun ki jingtip shaphang kane ha kane ka website.
09:24 Khublei Shibun. La pynkylla ia kane ka script da i Ribajanai Wankhar bad nga dei u Thawlad Miki . Leh kmen ban wad ia ka Geogebra.

Contributors and Content Editors

PoojaMoolya, Ribajanai, Thaw