Question

what is the of measure of an exterior of an equilateral triangle.
​

Answer 1

Answer:

Each angle of an equilateral triangle is of 60∘

. Therefore, each exterior angle is equal to 180∘

−60∘

=120∘

Answer 2

$\huge\mathcal{\red {\underline {\overline {\mid {\pink {120 degree}}\mid}}}}$

$\huge\mathcal{\red {\underline {\overline {\mid {\green {Explanation }}\mid}}}}$

• ᴀɴ ᴇǫᴜɪʟᴀᴛᴇʀᴀʟ ᴛʀɪᴀɴɢʟᴇ ʜᴀs ᴛʜʀᴇᴇ ᴇǫᴜᴀʟ sɪᴅᴇs.
• sᴜʙᴛʀᴀᴄᴛɪɴɢ 60 ғʀᴏᴍ ʙᴏᴛʜ sɪᴅᴇs ᴏғ ᴛʜɪs ᴇǫᴜᴀᴛɪᴏɴ ɢɪᴠᴇs ᴜs ᴀ ᴠᴀʟᴜᴇ ᴏғ ᴇǫᴜᴀʟ ᴛᴏ 120.
• ᴛʜɪs ᴍᴇᴀɴs ᴛʜᴀᴛ ᴛʜᴇ ᴇxᴛᴇʀɪᴏʀᴀɴɢʟᴇ ᴏғ ᴀɴ ᴇǫᴜɪʟᴀᴛᴇʀᴀʟ ᴛʀɪᴀɴɢʟᴇ ɪs ᴇǫᴜᴀʟ ᴛᴏ 120 ᴅᴇɢʀᴇᴇs.
• ᴛʜᴇ sᴜᴍ ᴏғ ᴀʟʟ ᴛʜᴇᴇxᴛᴇʀɪᴏʀ ᴀɴɢʟᴇs ɪs ᴀʟᴡᴀʏs 360 ᴅᴇɢʀᴇᴇs.