Geometrische aufgabensammlung. Ausgabe A: für gymnasien ... von Dr. W. Lietzmann.
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~ 9. Songtren6 ber Sreieede 71 2intelgIeitdungen nic)t e u abbieren, tdiemetr heigt man ba ß3ufammenfafen bon SE untb SF etwa baburtc, baf man bie (teictungen (2) unb (3) abbiert unb nun otwot)t SE wtie SF ate S5inett)atbierenbe uon ASD finbet; beibe muffent alto aufammenfat!en. 135. 3etoeife bur f)?ongruen5betracftung bie Iteic)eit ber i3ürfefbiagonaten. 136. )ie agt)ptijfcen 3tramiben jaben eine quabratijfe (runbfflaee, bie Gpite liegt jenfrecft über ber Pilitte biefer ~runbflädce. Sie eeitenfanten finb burd) bie Sertbinbungfttrecden ber 2pite mit ben buabrateden gebilbet. eteie bit ein stobef einer ~tramtibe 4er. Unterfucle bie burc) Atei gegenübertiegenbe 2eitenfanten gelegten ect)nitte; unterluce bie 2eitenfläcten. [tS bier O iftdi btre t O metrte. 137. eutnibe elemente, 3udc I, 5:,~mn gteiljenftigen Zreied finb bie aftitmintel gleic utnb, tvenn man bie ~cjentet uerlängert, jinb auic bie S3infeI unterfatb ber 3aift gIeitc (7ig. 103). - (e fei ABrF ba gleicjfenftige Treiec unb AB == Ar. AB unb AFr foen uerz längert toerben um Bd unb rE. cs betautpte, ee ift < ABr = ArB unb < FrBz = B rE. Ran nedme äntmlic auf B irgenbt o ben t3unft Z, unb uon AE fceneibe man AH = Z / ab unb ^iete Z r unb B 1-." )en jett folgenben 3eroeit bafürb, bai B Sunanit < 7rB Z = B rFL ift, füi)re jetbft. z5 ~ 138. eutuib bewleift in ben (tementen (3uc) I, 8) ben britten Rfongruenifat mit rilfe bet in ~ 8 2tufg. 119 genannten g d. 103. ~abee. iüilre biefen 9eteeie. 139. (Zut bem Tractatus quadrantis bee Robertus Anglicus, beutfie Überifeung aue bem 3Sare 1477):,3ft aber, bas bu fteft in einem tal vnb ains turens (- Zurmee) 4?cÖdin, bie auf einem perg ftet, meffen wilb, fo menf bes erften bie t?öd>in bes bergs mitt wtein ftenben jn nmat, als dor gefet ift. [agl. Slufg. 117.] Darnad? menP bie bödin bes berges vnb bes turns mit einanber, vnb 3üd? bie I?ödin bes bergs von [ ber gang gefammten )öc)in mit ainanber, vnb was öbrig bleibt, bas ift bie böclin bes burns auf bas genemeft," ertttae bie eUlet)obe. 140. 2un cdt wenter~e rquidftunben (1686): ",,in biftants 3weyer ~rt fo nidct gar toeit von einanber gelegen I tnb man von einem zum anbern nicdt geten fan 1 mit einem Lut vngefetr 3u mäffen.",,)efett bu folteft maffen bie b3reite eines maffers I vnnb latteft fein (eoinetrifdies 3nftrument bey bitr wolteft aber mit beim Lut I bie b3reite beti affers maffen: 5o ftelle bicd an bas Dfer 1 3iete ben Stulp beü futs an ben Xopff a bat er vnter fitd? ange J unb bewege bein lXopff iber fic? ober vnter fid? 1 fo lang bit bu an bem Stulp iin bas enbe bet Waffers erfeeit; barnad? 4alte ben Xopff fein ftill tre? bid? umb I file wiber an ben Stulp linauff bie (rbe | vnnb wo fid? bein radius barauff enbet 1 laj ein 3eidcen tefden 1 miü bie biftants von bir 3um 3eic4en 1 fo wirft bu bie 3raite bes Waffers 3imlid? genew laben." earumn?
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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 69
- Publication
- Leipzig [etc.]: B. G. Teubner,
- 1916-20.
- Subject terms
- Geometry -- Problems, exercises, etc.
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https://name.umdl.umich.edu/acv4752.0001.001
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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/acv4752.0001.001. University of Michigan Library Digital Collections. Accessed May 2, 2025.