geometry formulas for area and perimeter of shapes

Trapezoid

circle area and perimeter formula
$$\textbf{Area of the trapezoid}$$
$$A = h (a + b)$$
$$\textbf{Perimeter of the trapezoid}$$
$$P = a + b + h \bigg(\frac{1}{\sin(\theta)}+\frac{1}{\sin(\varphi)}\bigg) $$