Lines And Angles
Description: My Transversal And Paralell Lines Figure.
Image copyright: My Own Creation, 2009, Made In Paint.
1. Transversal- a line that intersects two other lines.
2. Angle- The shape formed by two line segments that extend from a given point.
3. Parallel- Two lines are said to be parallel if they do not meet.
4. Perpendicular- Two lines are perpendicular if they meet in a 90 degree right angle.
5. Adjacent angle- angles that is right next to each other.
6. Alternate exterior angle- angles that are outside of the parallel lines, and are diagonal from each other and are transversal.
7. Alternate interior angle- angles that are inside of the parallel lines, and are diagonal from each other and are transversal.
8. Vertical angle- pair of angles that are opposite from each other, where two lines cross.
9. Acute angle- an angle that is less than 90 degrees.
10. Obtuse angle- an angle that is between 90 and 180 degrees.
11. Right angle- an angle that is 90 degrees.
Key:
1. Parallel lines (2)-line segment AB and CD
2. Transversal line (1)-line segment EF
3. Adjacent angle (8)- 1&2, 2&3, 3&4, 4&1, 6&7, 5&8, 5&6, 7&8
4. Alternate exterior angle (2)- 1&7, 6&4
5. Alternate interior angle (2)- 3&5, 2&8
6. Vertical angle (4)-1&3, 5&7
7. Acute angle (4)- 2,4,6,8
8. Obtuse angle (4)- 1,3,5,7
9. Right angles, if any- none
