acute,obtuse,right angle, and straight line.
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Rather than straight line I would have said a reflex angle.
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there is 4 angles in a pentagon
4 squares have 16 angles
4
4 corners 4 angles Angles add up to 90' All angles are right angles Has 4 lines of symmetry
A quadrilateral is any polygon with 4 sides - and hence with 4 angles. Those angles may, or may not, be congruent.A quadrilateral is any polygon with 4 sides - and hence with 4 angles. Those angles may, or may not, be congruent.A quadrilateral is any polygon with 4 sides - and hence with 4 angles. Those angles may, or may not, be congruent.A quadrilateral is any polygon with 4 sides - and hence with 4 angles. Those angles may, or may not, be congruent.