Lines are parallel if they are always the very same distance apart (called "equidistant"), and also will never meet. Just remember:
Always the very same distance apart and never touching.
You are watching: Parallel lines have so much in common
The red heat is parallel come the blue line in each of these examples:
Try that yourself:
Pairs that Angles
When parallel lines gain crossed by one more line (which is referred to as a Transversal), you have the right to see that countless angles are the same, together in this example:
These angles have the right to be made right into pairs the angles which have special names.
Click on each surname to see it highlighted:
Now play through it here. Try dragging the points, and choosing different angle types. Friend can additionally turn "Parallel" turn off or on:
Testing for Parallel LinesSome that those special pairs that angles deserve to be offered to test if present really are parallel:
|These lines are parallel, due to the fact that a pair of matching Angles room equal.|
|These lines room not parallel, due to the fact that a pair the Consecutive interior Angles carry out not include up to 180° (81° + 101° =182°)|
|These currently are parallel, since a pair of alternate Interior Angles space equal|
angle On a right Line Angles approximately a allude Transversal Congruent angle Vertical angle Geometry index