Geometry - Shapes

2. The extent of a two-dimensional surface within a boundary, crucial for measuring the size of a shape.
3. An angle or triangle with an angle that measures less than 90 degrees.
5. A quadrilateral with two pairs of parallel sides.
7. A quadrilateral with all sides equal and all angles right angles, often used as a standard unit in geometry.
9. A type of triangle where all three sides are of equal length; also applies to polygons with equal sides.
10. A quadrilateral with opposite sides equal and all angles right angles, commonly found in everyday objects.
12. The continuous line forming the boundary of a closed geometric figure, an important calculation in geometry.
13. 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.
16. An angle or triangle with 1 angle that measures more than 90 degrees.

1. A four-sided polygon with four angles, such as squares and rectangles.
4. A quadrilateral with only one pair of parallel sides, offering asymmetrical features unlike other quadrilaterals.
6. A quadrilateral with all sides equal in length but not necessarily having right angles, often considered a slanted square.
7. A type of triangle with all sides of different lengths, often requiring special consideration in geometry.
8. A point where two or more lines meet, such as the corner of a polygon.
11. A three-sided polygon with three angles, which can vary in shape and type such as equilateral or isosceles.
12. A flat shape with at least three straight sides and angles, commonly used to describe various geometric figures such as triangles and quadrilaterals.
14. An angle or triangle that measures exactly 90 degrees.