Geogebra/C3/Relationship-between-Geometric-Figures/Khasi

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Time Narration
00:00 Khublei iaphi baroh.
00:01 Bad ngi pdiang sngewbha iaphi sha kane ka spoken tutorial/jinghikai shaphang ka Relationship between different Geometric Figures in Geogebra.
00:07 Ngi tharai ba phi lah don ka jingtip ia ka jingtreikam jong ka Geogebra.
00:11 Lada em , sngewbha leit lyngba ka Introduction to Geogebra tutorial/jinghikai shwa ba phi iaid shaphrang.
00:18 Sngewbha peit ba ka jingthmu ban hikai ia kane ka jinghikai kam dei ban bujli ia u compass box ba shisha.
00:24 Ka jingtei hapoh ka Geogebra ka lah pyndep bad ka view ban sngewthuh ia ki properties.
00:29 Hapoh kane ka jinghikai , ngin pule ban construct/tei ia ka
00:32 cyclic quadrilateral bad incircle.
00:35 Ban record ia kane ka jinghikai , Nga pyndonkam da ka Linux operating system
00:39 Ubuntu Version 10.04 LTS
00:43 bad Geogebra Version 3.2.40.0.
00:48 Ngin pyndonkam da ki Geogebra tools kiba harum na bynta ka jingtei/construcion:

Compass, Segment hapdeng ki Points, Circle bad ka Center lyngba u Point, Polygon, Perpendicular Bisector, Angle Bisector bad Angle.

01:02 Shah ngin bujli sha ka Geogebra window kaba thymmai.
01:05 Ban leh ia kane, shah ngin nion ha ka Applications, Education bad Geogebra.
01:13 Shah ngan resize ia kane ka window.
01:18 Nion ha u Options menu, nion ha Font Size bad hadien kata ha u 18 point ban shna ia ka figure/dur kaba shai.
01:25 Shah ngin tei/construct ia ka cyclic quadrilateral.
01:27 Ban leh ia kane , shah ngin jied ia ka Regular Polygon tool na u tool bar, nion ha ka Regular Polygon tool, nion ha uwei na artylli ki points ha u drawing pad.
01:38 Ngi iohi ba ka dialog box ka plie/open bad u default value 4.
01:42 Nion OK.
01:43 Ka square ABCD ka draw/dro.
01:46 Shah ngin pynthiah shiliang/tilt ia ka square da kaba pyndonkam da ka Move tool kaba don ha ka kamon.
01:51 Jied ia u Move tool na u tool bar, nion ha u Move tool.
01:56 Buh ia u mouse pointer ha u A lane ha u B. Ngan jied ia u B.
02:01 Buh ia u mouse pointer ha u B bad drag ia u bad u mouse. Ngi iohi ba ka square ka don ha ka kyrdan/position kaba thiah shiliang/titled mynta.
02:10 Let's construct a perpendicular bisector to the segment AB.
02:15 Ban leh ia kane , shah ngin jied ia ka Perpendicular Bisector tool na u tool bar.
02:20 Nion ha ka Perpendicular Bisector tool.
02:22 Nion ha u point A
02:24 Bad hadien kata ha u pointB.
02:26 Ngi iohi ba ka perpendicular bisector ka lah draw/dro.
02:30 Shah ngin construct/tei ia ka perpendicular bisector kaba ar sha u segment BC. Ban leh ia kane,
02:36 jied Perpendicular Bisector tool na u tool bar, nion ha u Perpendicular Bisector tool.
02:42 Nion ha u point B
02:44 bad hadien kata ha u point C.
02:46 Ngi iohi ba ka perpendicular bisectors ka ia kynduh ha u point.
02:50 Shah ngin mark ia une u point kum u E.
02:54 Shah mynta ngin construct/tei ia ka circle bad ka centre kum u E bad kaba pass lyngba u C.
03:01 Shah ngin jied ia ka Circle with Centre through Point tool na u tool bar, nion ha ka Circle with Centre through Point tool.
03:09 Nion ha u point E kum ka centre bad kaba pass lyngba u C. Nion ha u point E bad hadien kata ha u point C.
03:18 Ngi iohi ba ka circle kan pass lyngba baroh ki vertices jong ka quadrilateral. Ka cyclic quadrilateral ka lah draw/dro.
03:29 Phi tip ba ka cyclic quadrilateral ka don maximum area ha pdeng baroh ki quadrilaterals jong ka sequence ba ia kajuh jong ka side lengths?
03:37 Shah ngin pyndonkam da ka Move tool, ban animate/pynim ia ka figure/dur.
03:42 Ban leh ia kane, shah ngin jied ia ka Move tool na u tool bar, nion ha ka Move tool.Buh ia u mouse pointer ha u A lane B. Ngan jied ia u A.
03:52 Buh ia u mouse pointer ha u A bad drag ia u bad u mouse ban animate/pynim,
03:58 ban pynshisha ba ka jingtei/construction ka dei.
04:01 Shah mynta ngin save ia ka file.
04:04 Nion ha File >> Save As.
04:07 Ngan type ia ka file name kum kacyclic_quadrilateral.
04:21 bad nion ha Save.
04:23 Shah mynta ngin open/plie ia ka geogebra window kaba thymmai ban construct/tei ia ka incircle.
04:28 Ban leh ia kane shah ngin jied ia ka File bad New.
04:35 Shah mynta ngin construct/tei ia ka triangle. Ban leh ia kane , shah ngin jied ia ka Polygon tool na u tool bar, nion ha ka Polygon tool.
04:44 Nion ha ki points A,B,C bad A sa shisien, ban pyndep ia ka dur/figure jong ka triangle.
04:52 Shah ngin thew ia ki angles na bynta kane ka triangle.
04:55 Ban leh ia kane, shah ngin jied ia ka Angle tool na u tool bar, nion ha ka Angle tool.
05:00 Nion ha ki points B, A, C , C, B, A bad A, C, B.
05:15 Ngi iohi ba ki angles ki lah thew/ measured.
05:18 Shah mynta ngin construct/tei ia ka angle bisectors sha kine ki angles.
05:21 Jied ia ka Angle Bisector tool na u tool bar,
05:25 nion ha ka Angle Bisector tool. Nion ha ki points B, A, C.
05:32 Shah ngin jied ia ka Angle Bisector tool sa shisien na u tool bar ban construct/tei ia ka angle bisector kaba ar.
05:39 Nion ha ka Angle Bisector tool na u tool bar, nion ha ki points A, B, C.
05:48 Ngi iohi ba ki artylli ki angle bisectors ki ia kynduh ha u point .
05:52 Shah ngin mark ia une u point kum u D.
05:55 Shah mynta ngin construct/tei ia ka perpendicular line/lain kaba pass lyngba u point D bad u segment AB.
06:02 Jied ia ka Perpendicular Line tool na u tool bar, nion ha ka Perpendicular Line tool, nion ha u point D bad hadien kata ha u segment AB.
06:12 Ngi iohi ba u perpendicular line/lain u ia kynduh bad u segment AB ha u point.
06:17 Shah ngin mark ia une u point kum u E.
06:20 Shah mynta ngin construct/tei ia ka circle bad ka centre kum u D uba pass lyngba u E.
06:27 Shah ngin jied ia u Compass tool na u tool bar , nion ha u Compass tool, nion ha u point D kum ka centre bad DE kum ka radius.
06:37 Nion ha u point D bad hadien kata ha u point E bad D sa shisien ban pyndep ia ka figure/dur.
06:46 Ngi iohi ba ka circle ka ktah/touch ia baroh ki sides jong ka triangle.
06:50 Ka incircle ka lah draw/dro.
06:53 Bad kane , ngi poi sha kaba kut jong kane ka jinghikai.
06:57 Ban pynlyngkot:
07:02 hapoh kane ka jinghikai, ngi lah dep pule ban construct/tei ia ka
07:05 cyclic quadrilateral bad
07:07 incircle da kaba pyndonkam da ki Geogebra tools.
07:10 Kum ka assignment, Nga kwah iaphi ba phin draw/dro ia ka triangle ABC.
07:15 Mark ia u point D ha u BC, pyniasoh ia u AD.
07:19 Draw/dro ia ka incircles na ka triangles ABC, ABD bad CBD jong ka radii r, r1 bad r2 .
07:28 BE u dei u height 'h'.
07:30 Pynkhih/Move ia ki vertices jong ka triangle ABC,
07:33 ban pynshisha ia ka jingiadei relation:
07:35 (1 -2r1/h)*(1 - 2r2/h) = (1 -2r/h)
07:43 Ka output jong ka assignment ka dei ban long kumne.
07:52 Peit ia ka video kaba lah ban ioh na kane ka URL.
07:55 Ka pynlyngkot ia ka Spoken Tutorial project.
07:57 Lada phim don ia ka bandwidth kaba biang, phi lah ban download bad peit ia ka.
08:02 Ka Spoken Tutorial Project Team : ka pynlong ia ka workshops da kaba pyndonkam da ka spoken tutorials.
08:06 Ka ai certificates ia kito kiba pass ia ka online test.
08:09 Ia ki jingtip ba kham bniah , contact ia ngi ha ka contact@spoken-tutorial.org.
08:16 Ka Spoken Tutorial Project kadei ka bynta jong ka jingkren sha ki nonghikai project.
08:19 La kyrshan ia ka da ka National Mission on Education lyngba ka ICT, MHRD, Government jong ka India.
08:25 Ia ki jingtip ba kham bniah ha kane ka mission lah ban ioh na kane ka link.
08:29 La pynkylla ia kane ka script da i Ribajanai Wankhar bad nga dei u Thawlad miki na Meghalaya, signing off. Khublei ba phi lah iasoh.

Contributors and Content Editors

Ribajanai, Thaw