1. Haley's guide to Geometry

• • Lines

• Angles

• Triangles

• Quadrilaterals

• Circles

2. Lines

• Points

• Line Segments

• Rays

• Lines

• Intersecting lines

• Perpendicular Lines

• Parallel Lines

• Skew Lines

3. Points A Point A B A point is a precise location in space.It is labeled with a letter 4. Line Segments Any straight distance that starts at one spot and ends at another. 5. Rays

• Achosensection of a line.

6. Line

• A straight path that extends without end in opposite directions.

7. Intersecting lines

• Two lines that cross at a point and keep going.

8. Perpendicular lines

• Two intersecting lines with all 90 degree angles

9. Parallel lines

• Two lines that are never able to cross as long as they don't curve.

10. Skew lines

• Two lines that are not in the same plane.

11. Triangles

• Right

• Obtuse

• Acute

• Scalene

• Isosceles

• Equilateral

• Sum of Internal Angles

• Perimeter

• Area

12. Right Angle

• An angle thats measurement is 90 degrees

13. Obtuse Angle

• Any angle with a larger measurement than a right angle.

14. Acute Angle

• Any angle that has a smaller measurement than a right angle.

15. Scalene

• A triangle with no equal sides

16. Isosceles

• A triangle with only two equal sides.

17. Equilateral

• A triangle with all equal sides and angles.

18. Sum of Internal Angles

• The sum of all triangles is 180.

90 19. Quadrilaterals

• Quadrilaterals

• Trapezoid

• Parallelogram

• Rectangle

• Rhombus

• Square

• Area of a Rectangle

• Area of a Square

• Area of a Parallelogram

• Area of a Trapezoid

20. Quadrilaterals

• A shape with four angles and four sides that are all connected.

21. Trapezoid A quadrilateral with one set of parallel lines 22. Parallelogram A quadrilateral with two sets of parallel sides and opposite sides are congruent. 23. Rectangle A shape with four connected sides and opposite sides are parallel and congruent. 24. Rhombus A shape with four sides that are all congruent. 25. Square A shape with all sides congruent and opposite sides parallel. 26. Area of a rectangle Multiply length times width. Area=105 15in 7in 27. Area of a Square Multiply two of the sides. Area=9ft 3ft 3ft 28. Area of a Parallelogram Length times hight (worksheets will give you a dotted line for hight.) Area=15cm 5cm 3cm 29. Area of a trapezoid Add another trapezoid to make a rectangle. Thenmultiply length times width. Area= 126 6cm 7cm 3cm 30. Circles Chord Diameter Arc Radius Sector Circumference Area of a circle 31. Chord A line going through a circle. 32. Diameter The distance across a circle. 5cm 33. Arc A piece ofthe outside edge of a circle 34. Radius Half of the diameter. 35. Sector A piece of the area. 36. Circumference Diameter times 3.14 C=18.84 6cm 37. Area of a circle (Radius times radius) times 3.14 Area=78.5cm 5cm 38. Other polygons Hexagon Octagon Regular Polygon 39. Hexagon A shape with six equal sides. 40. Octagon A shape with eight equal sides.