Answer :
1-Line- A line is a straight one-dimensional figure having no thickness and extending infinitely in both directions.
2- Circle- A circle is a closed two-dimensional figure in which the set of all the points in the plane is equidistant from a given point called the “center”
3- Cardioid- a limacon with a pointed indent occurs when a=b.
4- Limacon with a loop- a limacon with an inner loop occurs when a is less than b.
5- Limacon without a loop- A Limacon graph could be said to resemble a lima bean. It takes the form of a circle with a dented side.
6- Lemniscate - A lemniscate is a polar graph taking the shape of a propeller or figure upright, at an angle, or on its side.
7-Rose Curves- One type of curve defined by a polar equation is a rose curve. The rose curve graph is often described as flower petals arranged around the pole. The petals are all congruent to each other and can have symmetry across the polar axis or the line θ=π/2
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