Choose all that define a rectangle in the coordinate plane by the four given points A(-3,0), B(3, 2), C(4, -1). D(-2, -3)

A(-2,-5), B(-2, 1), (3, 2), D(1.-4)

A(-1, -1), B(2, 3), C(10, -3), D (7.-7)

A(-3,-4), B(-1.2), C(2, 1). D(0, -5)

12 point are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr?

In δabc, if the length of side b is 3 centimeters and the measures of ∠b and ∠c are 45° and 60°, respectively, what is the length of side c to two decimal places?

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?