Applying properties of polygons

What is the formula for the SUM of interior angles in a polygon?

• Sum of interior angles = 180(n−2)

• Sum of interior angles = 180(n−2)÷n

• Sum of interior angles = 360

• Sum of interior angles = 360/n

What is the measure of one interior angle in a regular pentagon?

• 90°

• 108°

• 120°

• 180°

What is the formula for the sum of interior angles in a polygon?

• (n−2)180

• (n−2)180÷n

• 360

• 360/n

What is the sum of the interior angles of a quadrilateral?

• 270 degrees

• 360 degrees

• 90 degrees

• 180 degrees

Work out the size of one interior angle of this regular hexagon

• 120

• 720

• 100

• 360

Find the sum of the measures of the interior angles of a heptagon.

• $900\degree$

• $720\degree$

• $540\degree$

• $1080\degree$

What is the sum of all angles?

• 144
• 1800
• 1440
• 12

What is the formula to find one interior angle of a regular polygon?

• (n-2)180

• ((n-2)180)/360

• ((n-2)360)/n

• 360/n

• ((n-2)180)/n

What polygon has a sum of interior angles of 1620?

• Undecagon

• Dodecagon

• Decagon

• Nonagon

Find the value of X.

• 100° 
• 110° 
• 150° 
• 168°