Congruent: Same size same shape .
Adjacent: Next to each other.
Opposite: Two sides that are facing each other.
Parallel: No matter how long they go they never get closer or farther apart.
Acute angle: Less than a quarter turn more than no turns.
Obtuse angle: It is smaller than a straight angle and bigger than a right angle.
Reflex angle: More than a straight angle and less than a whole turn.
Here is my power point for my glossary: