What is the definition of chord?
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A ʟɪɴᴇ sᴇɢᴍᴇɴᴛ ᴄᴏɴɴᴇᴄᴛɪɴɢ ᴛᴡᴏ ᴘᴏɪɴᴛs ᴏɴ ᴀ ᴄᴜʀᴠᴇ. Exᴀᴍᴘʟᴇ: ᴛʜᴇ ʟɪɴᴇ sᴇɢᴍᴇɴᴛ ᴄᴏɴɴᴇᴄᴛɪɴɢ ᴛᴡᴏ ᴘᴏɪɴᴛs ᴏɴ ᴀ ᴄɪʀᴄʟᴇ's ᴄɪʀᴄᴜᴍғᴇʀᴇɴᴄᴇ ɪs ᴀ ᴄʜᴏʀᴅ. Wʜᴇɴ ᴛʜᴇ ᴄʜᴏʀᴅ ᴘᴀssᴇs ᴛʜʀᴏᴜɢʜ ᴛʜᴇ ᴄᴇɴᴛᴇʀ ᴏғ ᴀ ᴄɪʀᴄʟᴇ ɪᴛ ɪs ᴄᴀʟʟᴇᴅ ᴛʜᴇ ᴅɪᴀᴍᴇᴛᴇʀ
chord is the line segment joining two points on a curve. The term is often used to describe a line segment whose ends lie on a circle. ... All angles inscribed in a circle and subtended by the same chord are equal.