It has one pair of opposite angles that are equal but not two.
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An arrowhead has one pair of opposite angles which are equal and another set which are not.
An arrowhead typically has two equal angles. The two angles are formed by the two sides of the arrowhead meeting at the tip. These angles are typically acute angles, each measuring less than 90 degrees.
only if it is an equilateral triangle
Yes, the arrowhead shape is symmetrical along it's longitudinal axis (long side).
A parallelogram has opposite sides and angles congruent which means of equal measure.
False because it will have 2 equal opposite obtuse angles and 2 equal opposite acute angles with the 4 angles adding up to 360 degrees.