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A plane figure is a geometric figure formed by a broken and closed line or a curved and closed line.
Examples:

| Name | Characteristics | Examples |
|---|---|---|
| Square | A square has four equal sides. | ![]() |
| Rectangle | A rectangle has four sides. It has two pairs of opposite sides that have equal measurements. | ![]() |
| Triangle | A triangle has three sides. | ![]() |
| Rhombus | A rhombus has four sides of equal length. | ![]() |
| Circle | A circle is formed by a curved and closed line. | ![]() |