Lost in Geometry

Rhombus PQRS is shown on the coordinate plane. Points M and N are midpoints of their respective sides. Select all of the transformations that map the rhombus onto itself.

• a 90 degree rotation around the center of the rhombus

• a 180 degree rotation around the center of the rhombus

• a reflection across PR

• a reflection across NM

• a reflection across QS

Find the area of the shaded sector of circle O.  The radius is 6 inches and the central angle is 100°.  Express answer to the nearest tenth of a square inch.

• 9.2 sq. in.

• 10.5 sq. in.

• 31.4 sq. in.

• 38.2 sq. in.

Solve for x

• 97.5

• 33

• 16.5

• 52.5

Solve for the value of x

• -40

• 55

• 85

• 30

A parallelogram is a rectangle if its diagonals

• bisectors of each other

• are perpendicular

• are parallel

• are congruent

Given square ABCD, A(3, -2), B(4, 1) what is the slope of BC?

• 2/3

• -1/3

• 3

• -3/2

Solve for x

• 6.25

• 1.75

• 5

• 3

calculate the area of the triangle

• 125

• 43.3

• 86.6

• 134.2

Triangle ABC has vertices at (-4, 0), (-1, 6) and (3, -1). What is the perimeter of triangle ABC, rounded to the nearest tenth?

• 22

• 21.8

• 23.83

• 20.3

Quadrilateral ABCD is inscribed in circle O, as shown. What is the value of y?

• 83

• 97

• 76

• 104