Question

1
5) In a triangle ABC, AB=6 cm,
BC=8cm and CA=10cm. If D and E are
mid points of AB and BC respectively,
Then the length of DE is​

Answer 1

Answer:

DE = 4cm

Step-by-step explanation:

DECB is a parallelogram

the de is half of bc

bc is 8cm

so de is 4cm

Answer 2

ʙʏ ᴍɪᴅ-ᴘᴏɪɴᴛ ᴛʜᴇᴏʀᴇᴍ :

ᴛʜᴇ ʟɪɴᴇ sᴇɢᴍᴇɴᴛ ᴊᴏɪɴɪɴɢ ᴛʜᴇ ᴍɪᴅ-ᴘᴏɪɴᴛs ᴏғ ᴛᴡᴏ sɪᴅᴇs ᴏғ ᴀ ᴛʀɪᴀɴɢʟᴇ ɪs ᴘᴀʀᴀʟʟᴇʟ ᴛᴏ ᴛʜᴇ ᴛʜɪʀᴅ sɪᴅᴇ ᴀɴᴅ ᴇϙᴜᴀʟ ᴛᴏ ʜᴀʟғ ᴛʜᴇ ᴛʜɪʀᴅ sɪᴅᴇ.

ᴏɴ ᴀᴘᴘʟʏɪɴɢ ᴛʜᴇ ᴍɪᴅᴘᴏɪɴᴛ ᴛʜᴇᴏʀᴇᴍ, ᴡᴇ ɢᴇᴛ:

$ᴅᴇ= \frac{ᴀᴄ}{2}= \frac{10}{2}= 5$c.m