What do you call a closed-plane figure bounded by line segments that meet only at their endpoints?

• polygon

• prism

• realia

• shapes

What do you call a polygon with 5 sides?

• triangle

• quadrilateral

• pentagon

• hexagon

Which of the following is not a quadrilateral?

• rectangle

• rhombus

• trapezoid

• heptagon

What do you call the two angles whose measures add up to 90 degrees?

• Complementary Angles

• Supplementary Angles

• Linear Pair

• Vertical Angles

A polygon where all interior angles are less than 180 degrees, and no vertices point inward.

• Concave

• Convex

• Regular

• Irregular

Which of the following is an example of a concave polygon?

• 
• 
• 
• 

If ∠1 measures 130 ̊ , what is the measure of its adjacent angle?

• 40 ̊

• 50 ̊

• 60 ̊

• 70 ̊

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

• 900 ̊

• 1080 ̊

• 1260 ̊

• 1440 ̊

What is 30 % of 150?

• 30

• 35

• 40

• 45

It is a ratio comparing two quantities of different kinds of units.

• rate

• discount

• interest

• ratio