Classifying Triangles

These flashcards cover the classification of triangles by sides and angles, including definitions of different types of triangles.

What are the three classifications of triangles based on their sides?

Scalene, Equilateral, Isosceles.

What categorizes a scalene triangle?

A scalene triangle has all sides of different lengths.

What is an equilateral triangle?

An equilateral triangle has all three sides equal.

Define an isosceles triangle.

An isosceles triangle has at least two sides that are equal.

Name the four angle classifications of triangles.

Acute, Right, Obtuse.

What is an acute triangle?

An acute triangle has all angles less than 90 degrees.

What defines a right triangle?

A right triangle has one angle that is exactly 90 degrees.

What is an obtuse triangle?

An obtuse triangle has one angle greater than 90 degrees.

Given the coordinates A(0,-2), R(1,5), and T(-8,-4), how would you classify triangle AQR by its sides?

By calculating the lengths of the sides based on the coordinates.