Description: Angles Formed By a Transversal Figure
Image copyright: My Own Creation 2009, In Paint
1. transversal - A line that cuts across two or more other lines
2. angle the amount of turning between two lines
3. parallel lines that are the same distance apart
4. perpendicular lines that intersect at right angles to each other
5. adjacent angle angles right next to each other
6. alternate exterior angle - When a pair of parallel lines is intersected by a transversal, angles are on the outside
7. alternate interior angle - When a pair of parallel lines is intersected by a transversal, angles are on the inside
8. vertical angle pair of angles directly opposite each other, formed by the intersection of straight lines
9. acute angle an angle measuring less than 90º
10. obtuse angle any angle between 90º and 180º
11. right angle any angle measuring 90º
Key:
Parallel Lines:
Segment AB is parallel to segment CD
Transversal Lines:
Segment E is transversal to segment AB and segment CD
Adjacent Angle:
1&3, 1&4, 2&4, 2&3, 5&7, 5&8, 6&7, 6&8
Alternate Exterior Angle:
1&6, 4&7
Alternate Interior Angle:
5&2, 3&8
Vertical Angle:
1&2, 3&4, 5&6, 7&8
Acute Angle:
3, 4, 7, & 8
Obtuse Angle:
1, 2, 5, & 7
Right:
None
