Regular Geometry - Lesson 4.1 Day 1

Front

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

Back

The sum of the interior angles of a triangle is always 180 degrees.

Front

How do you classify triangles based on their sides?

Back

Triangles can be classified as Equilateral (all sides equal), Isosceles (two sides equal), or Scalene (no sides equal).

Front

How do you classify triangles based on their angles?

Back

Triangles can be classified as Acute (all angles less than 90 degrees), Right (one angle is 90 degrees), or Obtuse (one angle is greater than 90 degrees).

Front

What is an Isosceles Triangle?

Back

An Isosceles Triangle has at least two sides that are equal in length.

Front

What is a Scalene Triangle?

Back

A Scalene Triangle has all sides of different lengths.

Front

What is an Acute Triangle?

Back

An Acute Triangle has all angles measuring less than 90 degrees.

Front

What is a Right Triangle?

Back

A Right Triangle has one angle that measures exactly 90 degrees.

Front

What is an Obtuse Triangle?

Back

An Obtuse Triangle has one angle that measures greater than 90 degrees.

Front

How do you find the measure of a missing angle in a triangle?

Back

To find the measure of a missing angle, subtract the sum of the known angles from 180 degrees.

Front

What is the Triangle Inequality Theorem?

Back

The Triangle Inequality Theorem states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.