It All Came From Pencils
Geometry
Level
2
Hazri aligned two identical pencils in such a way that the pencil tips are stuck together as shown in the 2D (flat) diagram above.
If the angles formed by the pencil tips in the 2D diagram are both \( 40 ^ \circ \), then what is the value of \(x\) in degrees?
(Assume the pencils have a rectangular body and have their tips resembling isosceles triangles)
by
Kenneth Tan