Understanding Triangles

Flashcards covering the properties and classifications of triangles as discussed in the notes.

Triangle

A polygon with three edges and three vertices.

Obstuse Triangle

A triangle that has one angle greater than 90 degrees.

Acute Triangle

A triangle where all three angles are less than 90 degrees.

Right Triangle

A triangle that has one angle equal to 90 degrees.

Scalene Triangle

A triangle with all sides of different lengths.

Equilateral Triangle

A triangle where all three sides and all three angles are equal, each measuring 60 degrees.

Isosceles Triangle

A triangle with at least two sides of equal length.

Triangle Hierarchy

A way of categorizing triangles into subcategories based on their properties.

Properties of Equilateral Triangles

Equilateral triangles are always acute.

Properties of Right Triangles

Right triangles can be scalene or isosceles, but not equilateral.