1. TANNER'S Geometry Guide

• • Lines

• Angles

• Triangles

• Quadrilaterals

• Circles

• Lines

• Angles

• Triangles

• Quadrilaterals

• Circles

• Other Polygons

2. Lines

Points

• Line Segments

• Rays

• Lines

• Intersecting Lines

• Perpendicular Lines

• Parallel Lines

• Skew Lines

3. Points

• A point is precise location in space. It is labeled with a letter.

4. Intersecting

• Crosses at a point

5. Parallel

• Lines that never cross and are in the same plane.

6. Perpendicular

• Intersects at right angles 90 degrees.

7. Skew Lines

• Lines that are not in the same plane.

8. Types of Angles

• Right angle

• Obtuse angle

• Acute angle

• Vertex/Vertices

9. Types of Shapes Quadrilateral Trapezoid Parallelogram Rectangle Rhombus Square 10. Right Angle

• Exactly 90 degrees

11. Acute Angle

• Less than 90 degrees

12. ObtuseAngle

• More than 90 degrees

13. Types of Triangles Right Obtuse Acute Scalene Isosceles Equilateral 14. Right Triangle A right triangle is a triangle with one side that is 90 degrees. 15. Acute Triangle An acute triangle is a triangle with the biggest side that is less than 90 degrees. 16. Obtuse Triangle An obtuse triangle is a triangle that the biggest angle is bigger than 90 degrees. 17. Scalene Triangle A triangle that has all different sides. 18. IsoscelesTwo sides on a triangles that are the same. 19. EquilateralA triangle that all angles are the same. 20. Quadrilateral A type of shape with 4 angles. 21. Trapezoid A shape with 1 set of parallel lines. 22. Parallelogram A shape that has all sides parallel. 23. Rectangle A shape with 2 parallel sides. 24. Rhombus A parallelogram with all sides the equal length. 25. Square A shape with all sides that are equal. 26. Circles ChordsDiameter Arc Radius SectorCircumference 27. Chords A straight line between two points of a curve. 28. Diameter A straight line the travels through the middle of a circle. 29. Arc A continuous section in a circle. 30. Radius A straight line that travels half of the circle. 31. Sector A piece of a circle. 32. Circumference The length of a circle. 98 33. Other Polygons Pentagon Hexagon Heptagon Octagon Nonagon Decagon 34. Pentagon A five side polygon. 35. Hexagon A six sided polygon. 36. Heptagon A 7 sided polygon. 37. Octagon An eight sided polygon. 38. Nonagon A nine sided polygon. 39. Decagon A ten sided polygon. 40. The End Thanks for watching!