| A | B |
|---|
| SIDES | THE RAY OF A GIVEN ANGLE WHOES END POINT ARE THE VERTEX OF THE ANGLE |
| VERTICAL ANGLES | TWO ANGLES WHOSE SIDES FORM TWO PAIRS OF OPPOSITE RQAYS. THEY ARE CONGRUENT |
| MEASURE OF AN ANGLE | THE DISTANCE BETWEEN A POINT ON ONE RAY OF AN ANGLE AND A POINT ON THE OTHER RAY OF THE SAME ANGLE. GIVEN IN DEGREES. |
| SUPPLEMENTARTY ANGLES | TWO ANGLES WHOSE MEASURES HAVE THE SUM OF 180. |
| VERTEX | THE PLACE WHERE THE TWO SIDES OF AN ANGLE MEET. |
| RIGHT ANGLES | AN ANGLE WITH A MEASURE OF 90. |
| OBTUSE ANGLE | AN ANGLE WITH A MEASURE GREATER THAN 90. |
| ACUTE ANGLE | AN ANGLE WITH A MEASURE IS LESS THAN 90. |
| STRQAIGHT ANGLE | AN ANGLE WHOSE MEASURE IS 180. IT APPEARS AS A STRAIGHT ANGLE. |
| ANGLE BISECTOR | A RAY THAT DIVIDES AN ANGLE INTO TWO ANGLES THAT ARE CONGRUENT. |
| ADJACENT ANGLES | TWO ANGLES THAT SHARE A COMMON VERTEX AND SIDE, BUT HAVE NO COMMON INTERIOR POINTS. |
| CONGRUENT ANGLES | ANGLES THAT HAVE THE SAME MEASURS |
| COMPLEMENTARY ANGLES | TWO ANGLES WHOSE MEASURES HAVE THE SUM OF 90. |
| LINEAR PAIR | TWO ADJACENT ANGLES WHOSE UNCOMMON SIDES ARE OPPOSITES RAYS. THE SUM OF THEIR MEASURE IS 180. |
