Spot the one that does not fit

Exercise and reference answers

Questions

1. Items

   1. Triangle
   2. Circle
   3. Ellipse
   4. Parabola

   Odd item

   Triangle

2. Items

   1. Focus
   2. Directrix
   3. Eccentricity
   4. Kilogram

   Odd item

   Kilogram

3. Items

   1. A point
   2. A straight line
   3. Two lines
   4. An ellipse

   Odd item

   An ellipse

4. Items

   1. Apollonius
   2. Conic section
   3. Double cone
   4. Logarithm

   Odd item

   Logarithm

Instructions

Tap the item that does not belong with the rest.

Explanation