| Trojúhelník: | |
| o = | a+b+c |
| S = | ˝ a * va = ˝ b * vb = ˝ c * vc |
| Obdelník: | |
| o = | 2 * (a+b) |
| S = | a * b |
| Kosodélník: | |
| o = | 2 * (a+b) |
| S = | A * va = b * vb |
| Lichoběžník: | |
| o = | a+b+c+d |
| S = | (a+c) * v /2 |
| Kruh: | |
| d = | 2r |
| o = | 2 * 3,14 * r = 3,14 * d |
| S = | 3,14 * r(na2) = Ľ * 3,14 * d(na2) |
| Čtverec: | |
| o = | 4 * a |
| S = | a(na2) |
| S = | ˝ e(na2) |
| Kosočtverec: | |
| o = | 4 * a |
| S = | a * v |
| S = | ˝ e * f |
| Mezikruží: | |
| d1 = | 2 * r1 |
| d2 = | 2 * r2 |
| S = | 3,14 * (r1(na2) – r2(na2)) |
| S = | Ľ * 3,14 * (d1(na2) – d2(na2)) |
| Pravid. 2-úhelník: | S = n * a * Ro /2 |
| Heronův vzorec: | S = odmocnina:s*(s-a)(s-b)(s-c) kde s = ˝ (a+b+c) |
