Across
- 3. The continuous line forming the boundary of a closed geometric figure, an important calculation in geometry.
- 6. A quadrilateral with only one pair of parallel sides, offering asymmetrical features unlike other quadrilaterals.
- 9. A type of triangle with all sides of different lengths, often requiring special consideration in geometry.
- 10. A flat shape with at least three straight sides and angles, commonly used to describe various geometric figures such as triangles and quadrilaterals.
- 13. A three-sided polygon with three angles, which can vary in shape and type such as equilateral or isosceles.
- 14. A point where two or more lines meet, such as the corner of a polygon.
- 16. A quadrilateral with all sides equal in length but not necessarily having right angles, often considered a slanted square.
- 17. A type of triangle where all three sides are of equal length; also applies to polygons with equal sides.
- 18. The extent of a two-dimensional surface within a boundary, crucial for measuring the size of a shape.
Down
- 1. A four-sided polygon with four angles, such as squares and rectangles.
- 2. A quadrilateral with opposite sides equal and all angles right angles, commonly found in everyday objects.
- 4. An angle or triangle that measures exactly 90 degrees.
- 5. A quadrilateral with all sides equal and all angles right angles, often used as a standard unit in geometry.
- 7. An angle or triangle with an angle that measures less than 90 degrees.
- 8. A quadrilateral with two pairs of parallel sides.
- 11. An angle or triangle with 1 angle that measures more than 90 degrees.
- 12. The space, usually measured in degrees, between two intersecting lines or surfaces at or close to the point where they meet.
- 15. A type of triangle with at least two sides of equal length, often used to describe symmetry in geometry.