Polygons Grade 9

What is the sum of the exterior angles of a 20-gon?

• 180
• 360
• 3240
• 162

Find the value of x

• 87°
• 54°
• 101°
• 92°

Find the value of X.

• 60
• 120
• 85
• 55

Three of the angles in a quadrilateral have a sum of 252^o.  What is the measure of the fourth angle?

• 108^o
• 360^o
• 72^o
• 56^o

The shape shown is a square. Why could it also be considered a rhombus?

• It has 4 right angles.

• It has 4 congruent sides.

• There are no parallel sides.

• There are no perpendicular lines.

A triangle with one right angle and two congruent sides would be?

• Right Obtuse Triangle

• Right Scalene Triangle

• Right Isosceles Triangle

• Right Equilateral Triangle

Is the hexagon shown, a regular hexagon?

• Regular Hexagon

• Irregular Hexagon

Which of the following is not a quadrilateral?

• 
• 
• 
• 

What polygon has 6 sides and 6 vertices?

• Hexagon

• Octagon

• Triangle

• Rectangle

What polygon has 5 sides and 5 vertices?

• Pentagon

• Hexagon

• Octagon

• Quadrilateral