It depends on they type of arrowhead you have. If it is a arrowhead in the shape of a directional arrow, there are no obtuse angles. The most possible obtuse angles is 1.
The 'classic' arrow-head shape has 7 angles.
360 degrees
Yes
An arrowhead is a quadrilateral and in common with all quadrilaterals its 4 interior angles add up to 360 degrees.
It has one pair of opposite angles that are equal but not two.
yes
only if it is an equilateral triangle
Yes. The two angles on either side of the reflex angle are normally equal.
None they all ALL different!
A kite or an arrowhead.
an arrowhead has 4 angles. but no, you can't make an arrowhead out of only right angles.
It depends on they type of arrowhead you have. If it is a arrowhead in the shape of a directional arrow, there are no obtuse angles. The most possible obtuse angles is 1.
This is an arrowhead quadrilateral.
No
The arrowhead has zero right angles.
There are some that would probably be within the 10th of a degree but none are exactly the same.