2014.D3

Part of Durer Math Competition CD 1st Round - geometry

Problems(1)

computational geo with regular octagon 2013-14 Dürer Round1 D3

Source:

ABCDEF GH

is a regular octagon with

10

units side . The circle with center

A

AC

intersects the circle with center

D

CD

I

, different from

C

. What is the length of the segment

IF

geometryoctagonregular octagonDurer