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Synthetische
meetkunde
Bijeenkomst 1
Kennismaking:
hout.h@2college.nl
www.slideshare.net/huubvandenhout
Lesmateriaal:
Modulewijzer: Sharepoint
Construeren/benodigheden
Studieschema/planning
Geogebra (http://www.geogebra.org)
Instap Ordenen
Vlakke figuren
(i) vierhoeken
(ii) driehoeken
Vlakke figuren (hier vierhoeken) ordenen op basis
van overeenkomstige eigenschappen.
Instap Ordenen
Instap Ordenen
§1_1 Driehoeken construeren.
Een driehoek is alleen te tekenen als twee van de zijden
samen langer zijn dan de derde zijde.
§1_1 Driehoeken construeren.
Gelijkvormige driehoeken.
Twee driehoeken (figuren) zijn gelijk van vorm als er
sprake is van een vergroting.
Notatie:
§1_1 Driehoeken construeren.
Congruente driehoeken.
Twee driehoeken heten congruent wanneer ze elkaar
precies kunnen bedekken.
Twee driehoeken De overeenkomstige zijden
zijn congruent en hoeken zijn gelijk.Û
§1_1 Driehoeken construeren.
§1_1 Driehoeken construeren.
§1_1 Driehoeken construeren.
§1_1 Driehoeken construeren.
§1_1 Driehoeken construeren.
Aan welke (minimale) eisen moeten driehoeken
voldoen, willen we ervan overtuigd zijn dat zij
congruent zijn?
Of:
Op basis van welke voorwaarden is een driehoek
eenduidig te construeren?
§1_1 Driehoeken construeren.
Stelling (gelijkbenige driehoek):
In een gelijkbenige driehoek zijn twee hoeken even
groot.
Als een driehoek twee even lange zijden heeft, dan
heeft de driehoek ook twee gelijke hoeken.
Maken voor de volgende keer:
t/m 1_2 opgave 9
Je vindt de presentatie terug op:
www.slideshare.net/huubvandenhout

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