Monica has a triangular piece of fabric. The height of the triangle is 21 inches and the triangle's base is 12 inches. Monica says that the area of the fabric is 252 in2. What error did Monica make? Explain your answer by entering the correct area of the fabric.

Fill in the blank 1. a rhombus is a rectangle a) always b) sometimes c) never 2. a square is a quadrilateral a) always b) sometimes c) never 3. a trapezoid is a kite a) always b) sometimes c) never 4. a quadrilateral is a kite a) always b) sometimes c) never 5. a square is a rhombus a) always b) sometimes c) never 6. a parallelogram is a rectangle a) always b) sometimes c) never