Across
- 2. A portion of a line which starts at a point and goes off in a particular direction to infinity
- 5. The distance around the edge of a figure or shape. For example it is the sum of the lengths of each side ofpolygon. For circles and ellipses, it is called the circumference.
- 7. is a perfectly round geometricaland circular object in three-dimensional space, such as the shape of a round ball.
- 8. A straight line or a plane that divides a line, a
- 10. A flat surface that is infinitely large and with zero thickness
- 11. A line from the center of a circle to a point on the circle.
- 12. If the sum of the measures of two angles is 90°, the angles are called complementary. Whenever two
- 14. set of values that show an exact position.
- 15. Often referred to as the right cone. A cone is a solid formed by rotating a right triangle around one of its legs.
- 17. The line where two surfaces meet
- 18. sides are triangles which meet at the top (the apex).It is a polyhedron.
- 19. A true statement that doesn’t require it to be proved
- 20. involves writing reasoned, logical explanations that use definitions, axioms, postulates, and previously proved theorems to arrive at a conclusion about a geometric statement.
- 21. are complementary, each angle is said to be the complement of the other angle.
- 22. meets or crosses it at right angles (90°).
- 25. Two angles that share the same vertex and have one side in common between them.
- 27. The surface included within a closed figure, measuredby the number of square units needed to cover the surface.
- 28. The boundary line of a circle or the length of such a boundary line.
- 31. A pair of non-adjacent angles formed by the intersection of two straight lines
- 32. each of the pairs of opposite angles made by two intersecting lines
- 36. any angle over 90 degrees
- 38. A point B that lies on the line connecting two points A and C and has one of the two points on each side of it.
- 39. A point on a line segment that divides it into two equal parts
- 41. lines that are neither parallel or intersecting
- 42. A measure for angles. There are 360 degrees in a full rotation.
- 43. Two Angles are ____if they add up to 180 degrees.
- 45. An angle whose measure is exactly 90°
- 46. A precise location or place on a plane. Usually represented by a dot
- 47. A number of coplanar line segments, each connected end to end to form a closed shape.
- 48. The side opposite the right angle in a right-angled triangle
Down
- 1. Any of the individual surfaces of a solid object.
- 3. can be combined to define other terms.
- 4. Two rays with a common endpoint that point in opposite directions and form a straight line
- 6. A geometrical object that is straight, infinitely long and infinitely thin.
- 9. A solid with flat faces
- 12. speaking, curved outward or toward the eye. A convex curve is a set of points any of whose chords do not include any point that is not in the set.
- 13. the figure formed by two lines extending from the same point;
- 15. Lying on a common plane.
- 16. Polygons that have all corresponding sides and all corresponding angles congruent.
- 20. a solid geometric figure whose two end faces are similar, equal, and parallel rectilinear figures, and whose sides are parallelograms
- 23. A straight line going through the center of a circle connecting two points on the circumference.
- 24. In plane geometry, when one figure fits exactly on top of the other through simple translation and/or rotation, then these two figures are congruent.
- 26. a general proposition not self-evident but proved by a chain of reasoning; a truth established by means of accepted truths.
- 29. A solid object with two identical flat ends that are circular or elliptical and one curved side.
- 30. An angle with a measure between 0° and 90°.
- 33. Lying on the same straight line.
- 34. An additional geometric figure that is constructed to assist in solving a problem or producing a proof.
- 35. is a special kind of point that describes the corners or intersections of geometric shapes.
- 37. A geometrical object that is straight, infinitely long and infinitely thin.
- 40. Lines are____if they lie in the same plane, and are the same distance apart over their entire length
- 44. Two angles that are adjacent (share a leg) and supplementary (add up to 180°)
- 46. an angle, or a shape into two equal parts.
- 47. A solid object where the base is a polygon (a straight-sided shape)