Grade 7 Mathematics 1st Periodical Exam

What is a polygon?

• A closed figure with three or more sides

• A closed figure with four or more sides

• A closed figure with curved sides

• A closed figure with straight sides

Which of the following is a convex polygon?

• Triangle

• Square

• Pentagon

• All of the above

Which of the following is a non-convex polygon?

• Trapezoid

• Parallelogram

• Star

• Rectangle

A polygon with five sides is called a:

• Triangle

• Quadrilateral

• Pentagon

• Hexagon

A polygon with eight sides is called a:

• Octagon

• Heptagon

• Hexagon

• Pentagon

The sum of the interior angles of a triangle is:

• 180 degrees

• 360 degrees

• 540 degrees

• 720 degrees

The sum of the interior angles of a quadrilateral is:

• 180 degrees

• 360 degrees

• 540 degrees

• 720 degrees

A convex polygon is a polygon where all interior angles are:

• greater than 180 degrees

• equal to 180 degrees

• less than 180 degrees

• Congruent

A polygon where some interior angles are greater than 180 degrees.

• Regular polygon

• Irregular polygon

• Convex polygon

• Non-convex polygon

A polygon with one interior angle less than 180 degrees is called a:

• Convex polygon

• Non-convex polygon

• Regular polygon

• Irregular polygon