A circle is one example of a plane figure that is not a polygon.
A V is also not a polygon.
Chat with our AI personalities
The 11 side polygon is called bysocleptron
A parallelogram is a quadrilateral (four-sided polygon) with two pairs of parallel sides. By definition, a parallelogram does not need to have all right angles. Think of rhombuses, which do not have any right angles, yet are parallelograms. Therefore, the answer is no.
eyes
The distraught geometry teacher likely kept repeating "poly-gone, poly-gone" upon finding the empty parrot cage. This play on words combines the geometric term "polygon" with the sound of a parrot's repetitive speech. The teacher's distress over the missing parrot may have led to this clever yet humorous response.
Any type of triangle will have angles that add up to 180o. yet two angles of an isosceles triangle are equal