Take any two points on or inside a body. If every point on the straight line joining the two points lies within the shape, then it is convex. If not, it is non-convex.
A non convex is a concave and a convex is differently shaped
A shape with four non-parallel sides is an irregular quadrilateral. If the quadrilateral is bilaterally symmetrical, it is a deltoid (kite shape).
A scalene triangle has three unequal sides An equilateral triangle has three equal sides
Any polygon with four or more sides can have a pair of parallel sides. It is also possible to to have non-polygonal shapes - eg a cigar-shape - that has parallel sides.
Take any two points on or inside a body. If every point on the straight line joining the two points lies within the shape, then it is convex. If not, it is non-convex.
A shape where when you take any two points in the shape the line connecting them will be totally in the shape.
Any non-equilateral triangle.
A non convex is a concave and a convex is differently shaped
irregular
A quadrilateral?
Any shape that has not got 4 sides is a non-quadrilateral
A circle is non-polygon. Meaning it has a curved side. A circle has no sides. It is non-regular.
A shape with four non-parallel sides is an irregular quadrilateral. If the quadrilateral is bilaterally symmetrical, it is a deltoid (kite shape).
It could be an isosceles right triangle, or it could be a non-regular specimen of any polygon with more than three sides.
A scalene triangle has three unequal sides An equilateral triangle has three equal sides
A convex polygon is one with no angle greater than 180 degrees. A non-convex polygon is one that is not without such an angle.