Across
- 4. A polygon that has 8 sides and 8 angles. All the sides are of equal length, and all the angles are of equal measure.
- 5. Any straight line segment that passes through the center of the circle and whose endpoints lie on the circle. The largest distance that can be formed between two opposite parallel lines tangent to its boundary, and the width.
- 6. The perimeter of a circle. The external boundary or surface of a figure or object.
- 10. A polygon with three sides having three vertices. The sum of the interior angles is equal to 180°.
- 11. A closed 2-D shape, having 4 sides, 4 corners, and 4 right angles (90°). The opposite sides are equal and parallel.
- 12. The space occupied within the boundaries of an object in three-dimensional space. The capacity of the object.
- 14. A quadrilateral with both pairs of opposite sides parallel and all sides the same length. Opposite sides are parallel, and opposite angles are equal (it is a Parallelogram).
- 16. The amount of space covering the outside of a 3d shape. Area of a solid object is a measure of the total area that the surface of the object occupies.
- 19. A six-sided polygon. It can have equal or unequal sides and interior angles.
- 20. The distance around the edge of a shape. a closed path that encompasses, surrounds, or outlines either a two dimensional shape or a one-dimensional length.
Down
- 1. Straight line extending from the center of a circle or sphere to the circumference. Half of the diameter of a circle.
- 2. An angle of a polygon formed by two sides that share an end point. The formula for calculating the sum of interior angles is ( n − 2 ) × 180 ∘ where is the number of sides
- 3. Triangle that has two sides of equal length. Sometimes it is specified as having exactly two sides of equal length, and sometimes as having at least two sides of equal length.
- 7. Angle with a value equal to 90 degrees. A quarter of a circle.
- 8. The angle between any side of a shape and a line extended from the other side. Angle of a polygon = 360 ÷ number of sides
- 9. 2D polygon with five sides and five angles. The sum of all the interior angles is 540 degrees.
- 13. Angle that is always larger than 90° but less than 180°. An angle between a right angle and a straight angle.
- 15. A plane figure with four equal sides and four right (90°) angles. Its opposite sides are parallel to each other.
- 17. Amount of space occupied by a two-dimensional figure. Measured in square units like cm² and m².
- 18. Angle that measures greater than 0° and less than 90°. Smaller than a right angle.