Geometric Properties - Hermon Mehretab

5. meeting at a single point.
6. An angle that measures more than 90° but less than 180°.
8. An angle whose measure is less than 90°.
14. Lines in the same plane that never meet.
17. The same distance away from a given line or point.
19. a line that divides an angle into two equal parts.
20. A triangle in which each of the three interior angles measures less than 90°.
21. A three-sided polygon.
22. An angle that is formed inside a polygon by two sides meeting at a vertex.
23. A polygon with eight sides.
25. A two-dimensional closed figure whose sides are line segments.
26. A quadrilateral with one pair of parallel sides.
27. The mathematical name for a box with six rectangular faces with right angles at every corner.
29. A line segment that joins a vertex of a triangle to the midpoint of the opposite side.
33. the height of a geometric shape.
34. A five-sided polygon.
35. pairs of supplementary angles formed between a pair of parallel lines crossed by a transversal.
36. the perimeter of a circle.
38. the point where the three medians of a triangle intersect.
39. The point at which the three altitudes of a triangle meet.
40. The longest side of a right triangle.
42. A transformation that preserves size and shape.
43. A quadrilateral with two pairs of equal opposite sides and four right angles.

1. A quadrilateral with two pairs of opposite sides that are parallel.
2. Pairs of equal angles in corresponding positions formed by a transversal crossing a pair of parallel lines.
3. Half of a circle.
4. A rectangle in which the lengths of all four sides are equal.
7. divide into two equal parts.
9. lying on the same line.
10. A triangle with exactly two equal sides.
11. A quadrilateral in which the lengths of all four sides are equal.
12. A triangle with all three sides equal.
13. A line segment joining two points on the circumference that passes through the centre of a circle.
15. The point at which the three angle bisectors of a triangle meet.
16. the set of all points in the plane that are equidistant from a fixed point called the centre.
18. An angle that measures 90°
24. a line segment that joining two points on a curve.
28. a line segment that joins a vertex of a triangle to any point on the opposite side.
30. A triangle containing one obtuse angle.
31. An angle contained between one side of a polygon and the extension of an adjacent side.
32. A polygon with six sides.
37. the point of intersection of the three right bisectors of the sides of a triangle.
41. An angle that measures 180°.