The Leaning Tower of Pisa is 56.84 meters long. In the 1990’s, engineers restored the building so that angle y changed from 5.5° to 3.99°.  To the nearest hundredth of a meter, how much did the restoration change the height of the Leaning Tower of Pisa?

What type of triangle is shown below?

​A.)  Equiangular
B.)  Right Isosceles
C.)  Acute Scalene
D.)  Obtuse Scalene

Triangle MNO and triangle PQR are similar.

What is the length in units of segment NO?
A.)  14
B.)  19
C.)  22
D,)  26

Line segment AB has endpoints A(-1.5 , 0) and B(4.5 , 8).  Point C is on line segment AB and is located at (0,2).
What is the ratio of AC/CB ?

Triangle ABC is shown.

What three-dimensional figure results from rotating the triangle 360° about segment AC ?
A.)  cone
B.)  cylinder
C.)  pyramid
​D.)  sphere

A sign company is building a sign with the dimensions shown.

What is the area, in square feet, of the sign?

In 2014, the population of Hong Kong was estimated to be approximately 7,112,888 people.  The city covers an area
of approximately 426.25 square miles.  

What was the population density of Hong Kong  in 2014, in people per square mile, rounded to the nearest person?

Which term is defined as two intersecting lines that form four right angles in a plane?
A.)  skew lines
B.)  straight lines
C.)  parallel lines
​D.)  perpendicular lines

A parallelogram and an incomplete proof are shown.

Place reasons in the table to complete the proof:

A triangle is shown.

What is the length, in inches, of side a ?