this is a sixth grade project.

4. Lines

12. Angles

22. Triangles

23. Right Has one angle that equals 90 degrees 90

24. Obtuse The largest angle is greater than 90 degrees 170

25. Acute The largest angle in the triangle is less than 90 degrees 40

26. Scalene A triangle with no congruent sides

27. Isosceles A triangle with two congruent sides

28. Equilateral A triangle with all sides equal

29. Sum of internal angles The sum when you add all three sides of a triangle 60 60 60

30. Quadrilaterals

31. Quadrilateral Is a shape with four sides

32. Trapezoid A quadrilateral plane figure having one set of parallel sides

33. Parallelogram 2 sets of parallel lines

34. Rectangle Opposite sides are equal

35. Rhombus All four sides are congruent.

36. Square All sides congruent and meet at a right angle.

37. Circle

38. Chords A segment that connects C A

39. Diameter The longest chord on the circle and passes right through the middle A C

40. Arc The distance around the outside edge.

41. Radius Half the length of the diameter

42. Sector A slice of the circles area.

43. Circumference The distance around the circle 7ft

44. Area of a Circle The outside of the circle

45. Other Polygons

46. Pentagon A pentagon has 5 sides

47. Hexagon A six sided shape

48. Octagon Has eight sides