Triangle Types and Angle Properties

The video tutorial explains how to classify triangles based on their angles into right, acute, and obtuse triangles. Right triangles have one 90-degree angle, acute triangles have all angles less than 90 degrees, and obtuse triangles have one angle greater than 90 degrees. The video includes a practice session with Finn to identify different types of triangles.

What are the three types of triangles based on angle measurements?

• Equilateral, Isosceles, Scalene

• Right, Acute, Obtuse

• Large, Medium, Small

• Parallel, Perpendicular, Skew

What is the sum of all angles in any triangle?

• 270 degrees

• 180 degrees

• 90 degrees

• 360 degrees

Which characteristic is unique to a right triangle?

• One angle is exactly 90 degrees

• All angles are less than 90 degrees

• One angle is greater than 90 degrees

• All sides are equal

Which triangle type can have two equal angles?

• Right triangle

• Obtuse triangle

• Isosceles triangle

• Acute triangle

What is the defining feature of an acute triangle?

• All sides are equal

• All angles are less than 90 degrees

• One angle is greater than 90 degrees

• All angles are exactly 90 degrees

What is the term for angles less than 90 degrees?

• Right angles

• Acute angles

• Straight angles

• Obtuse angles

How many angles in an obtuse triangle are greater than 90 degrees?

• None

• One

• Three

• Two

Which triangle type is characterized by having one angle greater than 90 degrees?

• Acute triangle

• Obtuse triangle

• Equilateral triangle

• Right triangle

Which triangle has one angle that is exactly 90 degrees?

• Right triangle

• Obtuse triangle

• Equilateral triangle

• Acute triangle

What shape is used to indicate a right angle in diagrams?

• Triangle

• Square

• Circle

• Rectangle