Which of the following characteristics does a rhombus possess that proves the figure to be classified as a quadrilateral and a parallelogram?
Select all that apply.

two pair of opposite parallel sides
two pair of opposite congruent angles
consecutive sides are perpendicular
perpendicular diagonals
four sided figure
intersecting diagonals

Phillip had some bricks. he stacked them in 6 equal piles. which expression shows the number of bricks phillip put in each pile? let the variable m stand for the unknown number of bricks. m + 6 m÷6    m−6    6m

Find the distance between (0,5) & (-4,2)

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?