Circles, Triangles, and Area Pre-Quiz

A line segment that is half the diameter is called the ________

• Radius

• Diameter

• Circumference

• Area

The perimeter of a circle is called the _________

• Radius

• Diameter

• Circumference

• Area

What is the Diameter of the circle?

• 18

• 24

• 9

• 54

What is the Radius of this circle?

• 18

• 24

• 9

• 54

What is NOT a form of the formula for the circumference of a circle?

•  $C=d\pi$  

•  $C=2\pi r$  

•  $C=\pi r^2$   

What is the formula for area of a circle?

•  $A=\frac{1}{2}bh$  

•  $A=bh$  

•  $A=\frac{1}{2}\left(b_1+b_2\right)h$  

•  $A=\pi r^2$  

What is the formula for area of a triangle?

•  $A=\frac{1}{2}bh$  

•  $A=bh$  

•  $A=\frac{1}{2}\left(b_1+b_2\right)h$  

•  $A=\pi r^2$  

What is the formula for area of a rectangle?

•  $A=\frac{1}{2}bh$  

•  $A=bh$  

•  $A=\frac{1}{2}\left(b_1+b_2\right)h$  

•  $A=\pi r^2$  

Which of the following is a trapezoid?

• 
• 
• 
• 

What is the formula for area of a Trapezoid?

•  $A=\frac{1}{2}bh$  

•  $A=bh$  

•  $A=\frac{1}{2}\left(b_1+b_2\right)h$  

•  $A=\pi r^2$