Aria triunghiului oarecare:
[tex]A=\frac{l*h_l}{2}[/tex]
Aria triunghi dreptunghic:
[tex]A=\frac{c_1*c_2}{2} =\frac{ip*h_{ip}}{2}[/tex]
Aria triunghi echilateral:
[tex]A=\frac{l^2\sqrt{3} }{4}[/tex]
Aria patrat:
[tex]A=l^2[/tex]
Aria dreptunghi:
[tex]A=L*l[/tex]
Aria paralelogram:
[tex]A=b*h[/tex]
Aria rombului:
[tex]A=b*h=\frac{d_1*d_2}{2}[/tex]
Aria trapezului:
[tex]A=\frac{(B+b)*h}{2}[/tex]
