This document defines and describes basic geometry terms related to lines, angles, triangles, quadrilaterals, circles, and other polygons. It defines line segments, rays, intersecting and parallel lines. It also defines different types of angles such as acute, obtuse, right, straight, vertical and complementary/supplementary angles. Triangle types including right, obtuse, acute, scalene, isosceles and equilateral triangles are defined. Properties of quadrilaterals like parallelograms, rectangles, rhombuses, squares and trapezoids are outlined. Circle elements such as chords, diameters, radii, sectors and circumference are defined. Finally, it briefly mentions hexagons, octagons and regular

1. Geometry Lines Angles Triangles Quadrilaterals Circles

2. Lines Points Line Segments Line Rays Intersect Skew Parallel

3. Points A point is a precise location in space. It is lab bled with a letter. Point f f

4. Line segment A part of a line.

5. Line A never ending line

6. Ray A line that never ends but only gos one way

7. Intersecting Lines that cross

8. Skew Lines that are not on the same plane

9. Parallel Perpendicular lines that never cross

10. Angles acute, obtuse, right, straight, vertex/vertices, complementary, supplementary, vertical, opposite, adjacent

11. Acute An angle that is less than 90 degrees.

12. obtuse An angle over 90 degrees

13. right A 90 degree angle

14. straight A 180 degree angle

15. vertex/verticies The point were to angles meet

16. complementary To angles that are complementary add up to 90 degrees 10 degrees 80 degrees

17. Supplementary To angles that add up to 180 degrees 90 degrees 90 degrees

18. vertical Vertical is the opposite angle

19. opposite To different angles 90 degree 90 degrees

20. adjacent An angle that shares a vertex with 2 other angles.

21. triangles right, obtuse, acute, scalene, isosceles, equilateral, sum of internal angles, perimeter, area of a triangle

22. Right triangle A triangle which biggest angle is 90 degrees

23. Obtuse triangle A triangle which has the biggest angle over 90 degrees

24. Obtuse triangle A triangle which has the biggest angle over 90 degrees

25. Acute triangle A triangle with all angles less then 90 degrees.

26. Scalene A triangle with no equal sides.

27. Isosceles A triangle with to congruent sides.

28. Equilateral A triangle with all equal angles

29. Sum of Internal Angles

30. perimeter All the sides added to gather.

31. Area Base x hight 56mm 30mm

32. Quadrilaterals quadrilateral, trapezoid, parallelogram, rectangle, rhombus, square, area of a rectangle, area of a square, area of a parallelogram, area of a trapezoid, perimeter of a rectangle, perimeter of a square

33. quadrilateral A shape with 4 sides conectied.

34. trapezoid A quadrilateral with 1 set of parallel lines.

35. Parallelogram A quadrilateral that has 3 sets of parallel lines.

36. Rectangle A quadrilateral with 2 sets of parallel angles and 4 right angles.

37. Rhombus A parallelogram with no congruent sides.

38. Square A quadrilateral with all sides congruent.

39. Area of a rectangle Length x Width

40. Area of a square Length x Width L w

41. Area of a parallelogram Length x Width

42. Area of a trapezoid Put 2 trapezoids together multiply l x w and

43. Circles chord, diameter, radius, sector, circumference, area of a circle

44. Chord The chord is the longest line segment in a circle.

45. diameter The diameter is the length across the circle.

46. Radius The radius is ½ of the diameter 5

47. Sector Sector a part of the circle enclosed by to radii

48. Area of a circle The distance around a circle.

49. Other polygons hexagon, octagon, regular polygon

50. Hexagon A polygon with 6 sides and 6 angles

51. Octagon A shape with 8 sides and 8 angles.

52. Regular polygons Polygons that have congruent side sides.