Question

Prove that sum of angles if a triangle is 180°.

(9th class)
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Answer 1

Answer:

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from Maharashtra

Step-by-step explanation:

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Answer 2

ᴄᴏɴsɪᴅᴇʀ ᴀɴ ∆ᴀʙᴄ, ᴀs sʜᴏᴡɴ ɪɴ ᴛʜᴇ ғɪɢᴜʀᴇ ʙᴇʟᴏᴡ. ᴄᴏɴsᴛʀᴜᴄᴛɪᴏɴ: ᴅʀᴀᴡ ᴀ ʟɪɴᴇ ᴘǫ←→ ᴘᴀʀᴀʟʟᴇʟ ᴛᴏ ᴛʜᴇ sɪᴅᴇ ʙᴄ ᴏғ ᴛʜᴇ ɢɪᴠᴇɴ ᴛʀɪᴀɴɢʟᴇ. ᴛʜᴜs, ᴛʜᴇ sᴜᴍ ᴏғ ᴛʜᴇ ɪɴᴛᴇʀɪᴏʀ ᴀɴɢʟᴇs ᴏғ ᴀ ᴛʀɪᴀɴɢʟᴇ ɪs 180°.