Classifying Triangles

What is the definition of an equilateral triangle?

• A triangle with one acute angle and two obtuse angles

• 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

Tags

CCSS.4.G.A.2

How many sides does an isosceles triangle have that are of equal length?

• 4

• 3

• 5

• 2

Tags

CCSS.2.G.A.1

What is the definition of a scalene triangle?

• A triangle with three unequal sides and three unequal angles

• A triangle with one side longer than the other two sides

• A triangle with two equal sides and two equal angles

• A triangle with three equal sides and three equal angles

Tags

CCSS.4.G.A.2

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

• 180 degrees

• 360 degrees

• 90 degrees

• 270 degrees

Tags

CCSS.8.G.A.5

How many degrees are in each angle of an equilateral triangle?

• 45 degrees

• 90 degrees

• 120 degrees

• 60 degrees

Tags

CCSS.8.G.A.5

What type of triangle has one angle that measures more than 90 degrees?

• Right triangle

• Acute triangle

• Equilateral triangle

• Obtuse triangle

Tags

CCSS.4.G.A.2

What is the name of a triangle that has one right angle?

• Equilateral triangle

• Right-angled triangle

• Scalene triangle

• Isosceles triangle

Tags

CCSS.4.G.A.2

If a triangle has angles measuring 30, 60, and 90 degrees, what type of triangle is it?

• Isosceles triangle

• Equilateral triangle

• Right-angled triangle

• Scalene triangle

Tags

CCSS.4.G.A.2

What is the name of a triangle that has all angles measuring less than 90 degrees?

• Equilateral triangle

• Acute triangle

• Right triangle

• Obtuse triangle

Tags

CCSS.4.G.A.2

What is the name of a triangle that has one angle measuring exactly 90 degrees?

• obtuse-angled triangle

• isosceles triangle

• right-angled triangle

• equilateral triangle

Tags

CCSS.4.G.A.2