your answer is 3. you can only have 3 shapes with four right angles. those shapes are, square, rectangle, and the rhombus. I hope this helps and have a nice day!
The tangent of x is defined to be its sine divided by its cosine: tan x = sin x cos x . The cotangent of x is defined to be the cosine of x divided by the sine of x: cot x = cos x sin x .
