a)
Trójkąt
[tex] \frac{a \times h}{2}[/tex]
[tex] \frac{4 \times 7}{2} = 14[/tex]
[tex]6 + 5 + 4 = 15[/tex]
b)
Prostokąt
[tex]a \times b = 4 \times 6 = 24[/tex]
[tex]2(4 + 6) = 2 \times 10 = 20[/tex]
c)
Kwadrat
[tex]a \times a =6 \times 6 = 36[/tex]
[tex]4 \times 6 = 24[/tex]
d)
Romb
[tex]a \times h = 7 \times 4 = 28[/tex]
[tex]4 \times 7 = 28[/tex]
e)
Trapez
[tex] \frac{(a + b) \times h}{2} = \frac{(12 + 10) \times 8}{2} = \frac{22 \times 8}{2} = 11 \times 8 = 88[/tex]
[tex]7 + 7 + 10 + 12 = 14 + 22 = 36[/tex]
f)
Deltoid
[tex] \frac{e \times f}{2} = \frac{8 \times 6}{2} = 4 \times 6 = 24[/tex]
[tex]2 \times 4 + 2 \times 6 = 8 + 12 = 20[/tex]
