# 11.4 Circles and Arcs

## This lesson contains only examples and exercises related to circles and arcs.

An arc is a portion of a curve or circle. There are two basic braille symbols for arcs:

In print, the symbol for an arc appears over or on top of the letters that define the specified arc. Thus, you must follow the rules for a symbol that appears above the letters.

### Example 1

the arc AB is a minor arc

⠸⠩⠀⠐⠠⠁⠠⠃⠣⠫⠁⠻⠀⠸⠱⠀⠊⠎⠀⠁⠀⠍⠊⠝⠕⠗⠀⠁⠗⠉⠲

### Example 2

the arc DEF is a major arc

⠸⠩⠀⠐⠠⠙⠠⠑⠠⠋⠣⠫⠁⠻⠀⠸⠱⠀⠊⠎⠀⠁⠀⠍⠁⠚⠕⠗⠀⠁⠗⠉⠲

### Example 3

the measure of arc AB is twenty degrees

⠍⠐⠠⠁⠠⠃⠣⠫⠁⠻⠀⠊⠎⠀⠼⠆⠴⠘⠨⠡

### Example 4

the measure of arc AB plus the measure of arc CD

⠍⠐⠠⠁⠠⠃⠣⠫⠁⠻⠬⠍⠐⠠⠉⠠⠙⠣⠫⠁⠻

### Example 5

circle M

⠫⠉⠀⠠⠍

### Example 6

circle M is congruent to circle P

⠫⠉⠀⠠⠍⠀⠈⠱⠨⠅⠀⠫⠉⠀⠠⠏

### Example 7

arc AB is congruent to arc CD

⠐⠠⠁⠠⠃⠣⠫⠁⠻⠀⠈⠱⠨⠅⠀⠐⠠⠉⠠⠙⠣⠫⠁⠻

### Example 8

the fraction with numerator the measure of arc AB and denominator three hundred sixty

⠹⠍⠐⠠⠁⠠⠃⠣⠫⠁⠻⠌⠒⠖⠴⠼