
Ariile patrularelor
Presentation
•
Mathematics
•
7th Grade
•
Easy
Alina Ciocan
Used 5+ times
FREE Resource
4 Slides • 5 Questions
1
Ariile patrularelor
2
Aria unui patrulater
Putem calcula aria unui patrulater folosindu-ne de formula ariei unui triunghi?
3
Înalțimea unui patrulater
Ca și la triunghi, și la patrularere vom avea o formă în care vom avea nevoie de înalțime.
Înălțimea paralelogramului și a rombului este distanța dintre două laturi opuse.
Înălțimea unui trapez este distanța dintre cele două baze.
4
Ariile patrulaterelor cunoscute
Aria paralelogramului A=b ⋅h
Aria dreptughiului A=L⋅l
Aria pătratului A=l2
Aria rombului A=l ⋅h
Aria trapezului A=2(B+b)⋅h
OBSERVATIE: Un patrulater se numește ortodiagonal dacă diagonalele sale sunt perpendiculare. Aria unui patrulater ortodiagonal este 2d1⋅d2 , unde d1 și d2 sunt diagonalele patrulaterului.
La ce patrulatere studiate pute aplica formula de mai sus?
5
Multiple Choice
Fie ABCD un dreptunghi. Dacă
AB=13,5 cm și BC=10 cm, calculați AABCD.23,5 cm
47 cm
135 cm2
18 255 cm4
6
Multiple Select
Aria unui pătrat care are perimetrul de 24 cm este....... cm2
144
28
36
576
7
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Type answer...
8
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9
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