Lines are parallel if they are always the same distance apart (called “equidistant”), and will never meet. Just remember:
Always the same distance apart and never touching.
The red line is parallel to the blue line in both these cases:
In One Diagram
This diagram might make it easier to remember:
Also: Acute, Obtuse and Reflex are in alphabetical order.
Parts of an Angle
The corner point of an angle is called the vertex
And the two straight sides are called arms
The angle is the amount of turn between each arm.
Debia estar pensando que tipo de carne era o que comía Xiana