Geometry:6,7,8

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Across
  1. 4. a two-dimensional coordinate plane formed by the intersection of two perpendicular lines.
  2. 7. mathematical concept that describes the balanced and harmonious arrangement of parts on either side of a dividing line or around a central point
  3. 8. is a three-dimensional shape with a polygonal base and flat triangular faces, which join at a common point called the apex
  4. 10. Is the distance between two rays united by a vertex.
  5. 11. are two numbers that locate a specific point on a grid, known as a coordinate plane.
  6. 12. Is the measure of all the borders of a 2D figure,
Down
  1. 1. A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the centre.
  2. 2. Is the measure of all the space inside the borders of a 2D figure
  3. 3. is a three-dimensional solid object in which the two ends are identical
  4. 4. is a solid shape with six square faces.
  5. 5. A shape with n number of sides an angles that have the same measure.
  6. 6. A 2D shape with 3 angles.
  7. 7. A 2D shape with four equal sides and angles.
  8. 9. is the amount of space in a certain 3D object
  9. 13. A 2D shape with four 90 degrees angles. Them sides are called width and lenght.