JW

Untitled Flashcards Set

  1.  circle: a closed, two-dimensional curved shape

  2. prism: a solid shape with two identical and parallel faces

  3. cylinder: a three-dimensional solid that holds two parallel bases joined by a curved surface, at a fixed distance.

  4. pyramid: a 3D figure built with a base of a polygon and triangular faces all connected together.

  5. cone: A solid 3D object that has a circular base joined to a point by a curved side.

  6. sphere: a 3D geometrical shape, that has all its surface points equidistant from a common point.

  7. cross section: the shape formed when cutting an object parallel to its base with a plane

  8. rotation: the circular movement of an object around a centre

  9. volume: the space occupied within the boundaries of an object in three-dimensional space

  10. surface area: The total area of the surface of a three-dimensional object.

  11. density:  the mass of an object divided by its volume.

  12. radius: a line segment extending from the center of a circle or sphere to the circumference or bounding surface.

  13. diameter: a straight line that passes through the center of a circle and divides the circle into two sections/semicircles

  14. parallelogram: a 2D shape whose sides are parallel to each other

  15. diagonal: a line that connects two vertices of a polygon or solid, whose vertices are not on the same edge

  16. median: a line segment in a triangle that joins a vertex to the midpoint of the opposite side

  17. altitude: a line segment in a triangle through the vertex perpendicular to a line containing the side opposite of the vertex

  18. angle bisector: a line that splits an angle into two equal angles

  19. perpendicular bisector: divides a line segment into two equal pieces and intersects the bisected line segment at a right angle

  20. parallel lines: lines the same distance apart that never intersect

  21. congruence: same shape and size 

  22. similarity: same shape, corresponding angles are congruent

  23. line segment: a part of line that has endpoints on both sides to represent a distinct start and end

  24. inscribed angle: an angle with a vertex on the circumference of a circle and legs that contain chords of a circle

  25. arc: a smoot curve on a circle that joins two endpoints

  26. radian measure: the measure of an angle that subtends an arc with a length of exactly one radius