FTCE General Knowledge Math Practice Test

True or False: Some parallelograms are rhombuses?

1. True

2. False

3. Only if angles match

4. Depends on definition

The correct answer is: True

The statement is true because a rhombus is a specific type of parallelogram where all four sides are of equal length. Parallelograms themselves are defined as quadrilaterals with opposite sides that are both parallel and equal in length, but they do not require all sides to be equal. Consequently, since all rhombuses are parallelograms (due to satisfying the definition of having opposite sides that are parallel), it follows that some parallelograms indeed fit the definition of a rhombus. Therefore, the answer is correct.