question

Triangle ABC is an isosceles triangle in which AB = AC. What is the perimeter of â–³ABC?

answer

C

question

HIJK is a parallelogram because the midpoint of both diagonals is __________, which means the diagonals bisect each other.

answer

(1,0)

question

What additional information would prove that DEFG is an isosceles trapezoid?

answer

DE â‰… GF

question

What is the perimeter of rhombus ABCD?

answer

20 units

question

In the diagram, WZ=.
What is the perimeter of parallelogram WXYZ?

answer

D

question

LMNP is a parallelogram.
What additional information would prove that LMNP is a rectangle?

answer

LP âŠ¥ PN

question

Which statement proves that the diagonals of square PQRS are perpendicular bisectors of each other?

answer

The midpoint of both diagonals is , the slope of RP is 7, and the slope of SQ is .

question

The vertices of a quadrilateral in the coordinate plane are known. How can the perimeter of the figure be found?

answer

Use the distance formula to find the length of each side, and then add the lengths.

question

Which statement proves that parallelogram KLMN is a rhombus?

answer

The slope of KM is 1 and the slope of NL is -1.

question

Which statement proves that quadrilateral JKLM is a kite?

answer

B