I am regular polygon with all obtuse

angles. I have the smallest number of

sides of any polygon with obtuse angles.

How many sides do I have?

and what shape is it? is it a triangle?

Obtuse means greater than 90 degrees one way is to see which one is at the border squaer has 4 right triangles 4 sides more sides means bigger angles go up one side 4+1=5 pentagon is answer 5 sides