| A | B |
|---|
| CIRCLE | ALL POINTS IN A PLANCE THAT ARE AN EQUAL DISTANCE FROM A GIVEN POINT CALLED THE CENTER |
| CENTRAL ANGLE | AN ANGLE WITH A VERTEX AT THE CENTER OF THE CIRCLE |
| RADII | THE SEGMENTS ( LINES ) OF A CENTRAL ANGLE IN A CIRCLE |
| INTERCEPTED ARC | THE ARC CREATED BETWEEN THE TWO RADII AND EQUAL TO THE MEASURE OF THE CENTRAL ANGLE |
| MAJOR ARC | FOUND BY SUBTRACTING THE MINOR ARC FROM 360 DEGREES AND IS ALWAYS MORE THAN 180 DEGREES . THEY ARE ALWAYS LABELED WITH THREE LETTERS |
| MINOR ARC | HAS THE SAME MEASURE AS THE CENTRAL ANGLE AND IS ALWAYS LESS THAN 180 DEGREES . THEY ARE ALWAYS LABELED WITH TWO LETTERS |
| INSCRIBED ANGLE | AN ANGLE WITH A VERTEX ON THE CIRCLE . THE MEASURE OF AN INSCRIBED ANGLE IS EQUAL TO HALF THE MEASURE OF ITS INTERCEPTED ARC |
| CHORDS | THE SEGMENTS ( LINES ) THAT MAKE UP AN INSCRIBED ANGLE |
