The monthly rents (in dollars) paid by 8 people are given below. (Note that these are already ordered from least to greatest.)
880, 1005, 1020, 1040, 1065, 1085, 1150, 1155
Suppose that one of the people moves. Her rent changes from $1155 to $1115.
Answer the following.

you need to rotate this triangle about the origin 270 degrees clockwise to create the full square.

answer is c

step-by-step explanation:

answer: the prove is mentioned below.

step-by-step explanation:

an isometric rigid transformation is a transformation of the plane that preserves lengths and angles.    

that is, the pre-image and the image under a rigid transformation will be congruent.

here, given: cb ║ ed and cb ≅ ed

prove that: δ cbf ≅ δ edf

since, cb ║ ed

therefore, by the alternative interior angle theorem,

∠fcb ≅ ∠fed

∠fbc ≅ ∠ fde

and, cb ≅ ed ( given)

therefore, the angles and sides are persevered after transformation.

thus, by the definition of isometric rigid transformation,

δ cbf ≅ δ edf