Geometrische aufgabensammlung. Ausgabe A: für gymnasien ... von Dr. W. Lietzmann.
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~ 24. 3unft, etrede, treted 137 14. atlbiere bie ~eiten a) bee Zreied (2; 7); (1; 1); (3; 6), b) eines beliebigen Sreiecd unb geige, bal ba toon ben Geitenmittten gebilbete Sreied ~eiten t)at, bie Ialb jo grofi wtie bie Zeiten be urfprrüngficten Sreied jinb. 15. eseftimme bie 2änge ber ~eitenlaltierenben bee Zreied, beffen eden bie Üoorbinaten (1; 1); (7; 2); (2; 7) t)aben. 16. a)-d) Seile bie in SXInf. 11 a)-d) genannten ~treden a) innertlic im 2Seraifitnit 1 4; 1) innertid) im S2ertiiätnie 2: 3, y) innertid im 93ert)ättni m: r n, d) äuneric5 im Sertifttnit 1 2, s) äuierfict im 2ertäitnie 2 5, g) äu~ertlic im 2Sertätitni m: n, ]) im 2Ser:)aItnie 2 unb gib ieteift bie goorbinaten be0 Zeilpunftee an. 17. Beftimme bie Sage bea ~ rxertp nnte im Sreiede a) mit ben effen (-2; 3), (7; 5) nnb (3; - 8), b) mit ben (icen (x1; Uy), (x2; y2) unb (X3; y3). 18. ~5iib für bie beigung ig infet her gtredee mit ben -nbtnften a) (2; 3) unb (7; 8); b) (2; 1) nnb (-1; 4); c) (7; 8) unb (0; 0); d) (x,; yi) unb (x,; y). gegen bie x: Itcfe inb gegen bie y-c-W e eine 3e5ietunng an. sm alffe a) bit c) finb bie sEeigung toinet i bteftimmen. vrapt ntir 2nrteicrt. 19. Son bein nbpuinften ber 2trede a) (2; 1); (7; 5), b) (al; b1); (a; b2) finb genfredten auf bie x-SIfe gefaät. <Zer gniiatt be uöon ber etrede, ben Genf reten unb ber xf-cfife teftimmten Sratpe5e ift it beredCnen. 20. ein etredenung ift burt bie fotgenben unnfte beftimmt (0; 5); (1; 7); (3; 3); (5; 8). Vie gro~ ift bae flädenftüi, bat bon 2tredeniug, x —Scrie, 2y1Ic~fe unb ber ~entrecten ton (5; 8) auf bie x-2ctfe beftimmt tirb? 21. 53erectne ben Snatft be SZreied mit ben üoorbinaten a) (1; 2); (7; 3); (2; 8); b) (0; 0); (6; 8); (13; 5); c) (0; 0); (0; 7); (12; 9); d) (4; 0); (- 4; 0); (3; 8); e) (0; o); (x,; y); (x,; y,); f) (x,; i); (x,; y,); (x3; y). 22. a)-e) e3eftimme moögIit)f praftijc ben nst)aft ber in utnfg. 9 a)-e) genannten Zreiedce. 23. a)-f) eftimniie möogtict prattift ben ntactt ber in 2Sinfg. 10 a)-f) genannten 3ierede.?ratift1e anftiranungnrte 2n ber {leobäfie rerben bie etnnfte eined griöeren, alt eben angefetenen 13ebietee auf ein rectrtinftige ASoorbinatenft)ftem be3ogen, bae eita Fo orientiert ift, bafi bie pofitiue x-Q2fctje nact Sorben geric)tet it, al[o in irgenbeinent feten J3eribian fällt, wtiarenb bie pofitibe y:t)re nach ~ften Seigt. (e fann aber auct bie pojitiue x, cd)fe nac) iüben 3eigen, bann 3eigt bie poiitite y tdife nad) Ueften. Mir feeen in Butitnft bae erfte t)ftem uoranu, bao. 33. in ben 40 preunif)en Sanbeteermeifung~gebieten angeoanbt ift.
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About this Item
- Title
- Geometrische aufgabensammlung. Ausgabe A: für gymnasien ... von Dr. W. Lietzmann.
- Author
- Lietzmann, Walther, 1880-1959.
- Canvas
- Page 129
- Publication
- Leipzig [etc.]: B. G. Teubner,
- 1916-20.
- Subject terms
- Geometry -- Problems, exercises, etc.
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https://name.umdl.umich.edu/acv4752.0002.001
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"Geometrische aufgabensammlung. Ausgabe A: für gymnasien ... von Dr. W. Lietzmann." In the digital collection University of Michigan Historical Math Collection. https://name.umdl.umich.edu/acv4752.0002.001. University of Michigan Library Digital Collections. Accessed May 1, 2025.