4/18 Area of regular quadrilateral

In a regular polygon, the line from the center to an outer vertice is a(n)

• Apothem

• Central Angle

• Radius

• Regular Polygon

In a regular polygon the line from the center to the mid-point of an outer side is a(n)

• Radius

• Central Angle

• Sine

• Apothem

Find the area of this regular polygon.

• 84.9 m²

• 82.3 m²

• 74.9 m²

• 62 m²

What is the formula for area of a regular polygon.

• ½⋅apothem⋅perimeter

• a² + b² = c²

• πr²

• √x²+y²

Find the area. 

• 32
• 128
• 64
• 55

A ___________ polygon is a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length). 

• plain
• perfect
• regular
• magical

Find the area of the regular polygon.

• $4\sqrt{2}\ cm^2$

• $8\sqrt{2}\ cm^2$

• $128\ cm^2$

• $64\ cm^2$

Find the area of the regular polygon.

• $30\sqrt{3}\ ft^2$

• $150\sqrt{3}\ ft^2$

• $75\sqrt{3}\ ft^2$

• $50\sqrt{3}\ ft^2$

What is the apothem in the following regular triangle?

•  $5\sqrt{3}\ ft$ 

•  $10\sqrt{3}\ ft$ 

•  $5\ ft$ 

•  $10\ ft$ 

REVIEW PROBLEM. What is the area of this triangle? (Round to the nearest whole number)

•  $22\ in^2$   

•  $38\ in^2$ 

•  $43\ in^2$  
  

•  $75\ in^2$