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
