
Rúmfræði og horn
Authored by Heidrun Helga
Mathematics
7th Grade
Used 2+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Hvað er mælikvarði á horn?
Gráður
Millímetrar
Kilómetrar
Centímetrar
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Hvað er grannhorn?
Grannhorn kallast tvö horn sem eru hlið við hlið og eru samtals 180°.
Grannhorn er tvö bein strik eða línur sem skerast mynda alltaf fjögur horn.
Tvær línur, sem skerast þannig að rétt horn, 90°, myndast, eru hornréttar hvor á aðra
Grannhorn er minna en 90°.
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Hvað er ummál hrings með geisla 5 cm?
40.84 cm
25.12 cm
31.42 cm
15.70 cm
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Hvernig reiknarðu þvermál hrings? (diameter/D=þvermál)
D = 2C
D = r/2
D = 2r
D = C/2
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Hvað er miðja hrings?
Miðja hrings er línan sem umlykur hringinn.
Miðja hrings er punktur í miðju hringsins.
Miðja hrings er fjarlægðin frá hringnum að miðjunni.
Miðja hrings er stærsta hringlaga formið.
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Hvað er geiri í hring?
Geiri er hluti af hringfleti. Hann markast af tveimur geislum og hringferlinum.
Miðja hrings
Hringur inni í hring sem myndar lítinn snúð í miðjunni
Fjarlægðin frá miðju hrings að hringferlinum.
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Hvaða regla gildir um topphorn?
Topphorn eru alltaf jafn stór
Snúningur þríhyrnings
Tvö horn sem hafa einn sameiginlegan arm og hinir armarnir eru gagnstæðar hálflínur.
Topphorn er 120 gráðu horn.
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