Defining Triangles

What is the definition of an equilateral triangle?

• A triangle with all three sides of different lengths

• A triangle with two sides of equal length

• A triangle with all three sides of equal length.

• A triangle with no equal sides

How many equal sides does an isosceles triangle have?

• 3

• 2

• 4

• 5

What is the name of a triangle with all sides of different lengths?

• Scalene triangle

• Right triangle

• Equilateral triangle

• Isosceles triangle

Which type of triangle has one angle greater than 90 degrees?

• Obtuse triangle

• Acute triangle

• Equilateral triangle

• Right triangle

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

• 90 degrees

• 270 degrees

• 120 degrees

• 180 degrees

What is the name of a triangle with one angle equal to 90 degrees?

• isosceles triangle

• obtuse triangle

• right triangle

• acute triangle

In a scalene triangle, how many sides are of equal length?

• 2

• 1

• 3

• 0

What is the name of a triangle with all angles less than 90 degrees?

• Obtuse triangle

• Acute triangle

• Equilateral triangle

• Right triangle

What is the name of a triangle with one angle equal to 180 degrees?

• linear triangle

• straight line triangle

• straight angle triangle

• 180-degree triangle

Which type of triangle has all angles equal to 60 degrees?

• Equilateral triangle

• Right triangle

• Scalene triangle

• Isosceles triangle