CLASSIFICATION OF TRIANGLES, according to their sides and according to their angles

Summary

In this video, Raúl, Darío's math teacher, introduces viewers to the fascinating world of triangles. He explains how triangles can be classified by their sides—equilateral, isosceles, or scalene—and by their angles—acute, right, or obtuse. Using clear examples, Raúl demonstrates how to identify these types of triangles based on their properties. The lesson concludes with interactive practice, helping viewers understand the concepts by classifying different triangles themselves. Raúl reassures that math is approachable, and encourages viewers to feel confident in mastering triangle classifications.

Takeaways

• 😀 A triangle is a three-sided polygon.
• 😀 Triangles can be classified based on their sides or angles.
• 😀 An equilateral triangle has all sides of the same length.
• 😀 An isosceles triangle has two equal sides.
• 😀 A scalene triangle has all sides of different lengths.
• 😀 Triangles can also be classified according to their angles: acute, right, and obtuse.
• 😀 An acute triangle has all three angles less than 90 degrees.
• 😀 A right triangle has one angle exactly equal to 90 degrees.
• 😀 An obtuse triangle has one angle greater than 90 degrees.
• 😀 Example: A triangle with three unequal sides and one obtuse angle is classified as both a scalene and an obtuse triangle.