User talk:Yash namdev

this is my first ever article to wikipedia. I am going to inform you about the thales theorem. thales is a mathematician of grees. He introduced a theorom. He says that in a triangle if a straight line is parallel to a side then this parallel line divides other two side in same ratio. means if ABC is a triangle and D, in AB and E, in AC parallel to BC then DE divide AB And AC in same ratio. If DE||BC then AD/DE=AE/EC.