Properties and Types of Triangles

What is the minimum number of straight lines required to form a polygon?

• 1

• 2

• 3

• 4

What is a polygon with 6 sides called?

• Pentagon

• Hexagon

• Heptagon

• Octagon

What type of triangle has all its interior angles less than 90 degrees?

• Right-angled triangle

• Obtuse-angled triangle

• Acute-angled triangle

• Isosceles triangle

Which statement describes a property of an equilateral triangle?

• All sides are equal in length.

• Two sides are equal in length.

• No sides are equal in length.

• One angle is 90 degrees.

Which statement accurately describes an acute triangle?

• One angle is exactly 90 degrees.

• One angle is greater than 90 degrees.

• All angles are less than 90 degrees.

• All angles are equal to 60 degrees.

How many axes of symmetry does an isosceles triangle possess?

• 0

• 1

• 2

• 3

What is the total measure of the interior angles in any triangle?

• 90 degrees

• 180 degrees

• 270 degrees

• 360 degrees

An exterior angle of a triangle is equal to the sum of which angles?

• The two adjacent interior angles.

• The two opposite interior angles.

• One adjacent and one opposite interior angle.

• All three interior angles.

How many axes of symmetry does a parallelogram have?

• 0

• 1

• 2

• 4

Which statement is true about the sides of a rhombus?

• Only opposite sides are equal

• All sides are equal

• Only adjacent sides are equal

• No sides are equal