Question

write all properties of a triangle. ​

Answer 1

• A triangle has three sides, three vertices, and three angles.
• The sum of the three interior angles of a triangle is always 180°.
• The sum of the length of two sides of a triangle is always greater than the length of the third side.
• A triangle with vertices P, Q, and R is denoted as △PQR.

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Answer 2

ᴘʀᴏᴘᴇʀᴛɪᴇs ᴏғ ᴀ ᴛʀɪᴀɴɢʟᴇ

●ᴀ ᴛʀɪᴀɴɢʟᴇ ʜᴀs ᴛʜʀᴇᴇ sɪᴅᴇs, ᴛʜʀᴇᴇ ᴠᴇʀᴛɪᴄᴇs, ᴀɴᴅ ᴛʜʀᴇᴇ ᴀɴɢʟᴇs.

●ᴛʜᴇ sᴜᴍ ᴏғ ᴛʜᴇ ᴛʜʀᴇᴇ ɪɴᴛᴇʀɪᴏʀ ᴀɴɢʟᴇs ᴏғ ᴀ ᴛʀɪᴀɴɢʟᴇ ɪs ᴀʟᴡᴀʏs 180°.

●ᴛʜᴇ sᴜᴍ ᴏғ ᴛʜᴇ ʟᴇɴɢᴛʜ ᴏғ ᴛᴡᴏ sɪᴅᴇs ᴏғ ᴀ ᴛʀɪᴀɴɢʟᴇ ɪs ᴀʟᴡᴀʏs ɢʀᴇᴀᴛᴇʀ ᴛʜᴀɴ ᴛʜᴇ ʟᴇɴɢᴛʜ ᴏғ ᴛʜᴇ ᴛʜɪʀᴅ sɪᴅᴇ.

●ᴀ ᴛʀɪᴀɴɢʟᴇ ᴡɪᴛʜ ᴠᴇʀᴛɪᴄᴇs ᴘ, ǫ, ᴀɴᴅ ʀ ɪs ᴅᴇɴᴏᴛᴇᴅ ᴀs △ᴘǫʀ.