A reflex angle
An arrowhead
A four-sided shape with one right angle is a quadrilateral. There is no more specific term, unless it has more than one right angle or has equal sides.
There is no special name for such a shape.
a rectangle
Yes, it is possible to draw a quadrilateral with a reflex angle and an obtuse angle. A reflex angle measures more than 180 degrees, while an obtuse angle measures between 90 and 180 degrees. To create a quadrilateral with these angles, you can draw a shape with one reflex angle (greater than 180 degrees) and one obtuse angle (between 90 and 180 degrees), along with two acute angles (less than 90 degrees).
It can, but does not have to.
No. For a start, a circle has no angles. No regular polygon has a reflex angle.
Well, honey, to draw a quadrilateral with 1 reflex, 1 obtuse, and 2 acute angles, you'll need to start by sketching a shape with 1 angle greater than 180 degrees (that's your reflex angle), 1 angle greater than 90 degrees (that's your obtuse angle), and 2 angles less than 90 degrees (those are your acute angles). Just make sure all the angles add up to 360 degrees, and you'll have yourself a sassy quadrilateral!
It is a parallelogramIf one of the angles is a right angle (then they all are) and the quadrilateral is a rectangle.If both pairs of sides are equal in length (but none of the angles is a right angle) the quadrilateral is a rhombus.If the sides are equal and one of the angles is a right angle, the quadrilateral is a square.
A reflex angle
An arrowhead
A four-sided shape with one right angle is a quadrilateral. There is no more specific term, unless it has more than one right angle or has equal sides.
There is no special name for such a shape.
There is no special name for such a shape.
parallelogram!
a rectangle