Maths year 9 review

What is the formula for the sum of the interior angles of polygons?

• 
  

  $360\degree$

• $\left(n-2\right)\times180\degree$
  

• $\left(n-2\right)$
  

• $\left(n+2\right)\times180\degree$
  

What is the measure of one interior angle of a regular hexagon?

• 120
• 60
• 45
• 135

What is a regular polygon?

• Polygon with all sides congruent
• Polygon with all angles congruent
• Polygon with all sides and angles congruent
• Polygon with no sides or angles congruent

Regular or irregular polygon?

• Regular Polygon
• Irregular Polygon

Find the sum of the interior angles of a nonagon.

• 1260
• 900
• 1620
• 180

Which ones are always regular polygons?

• isosceles triangle

• rectangle

• square

• arrowhead

• equilateral triangle

What is the measure of one interior angle of a regular hexagon?

• 120
• 60
• 45
• 135

What is a polygon?

• A closed figure made up of straight line segments
• An open figure made up of straight line segments
• A closed figure made up of curved edges
• An closed figure made up of crossed line segments

 What is the name of this polygon?

• a pentagon
• a quadrilateral
• an octagon
• a triangle

Calculate the sum of the interior angle measures of a polygon with 25 sides.

• 360 degrees
• 4500 degrees
• 335 degrees
• 4140 degrees