What is a Scalene Triangle? - Definition, Properties & Examples


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The side lengths of four triangles are given below. Which of the triangles is a scalene triangle?

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1. The angle measures of four different triangles are given below. Which of these is a scalene triangle?

2. The measure of two sides of a triangle are 5 cm and 6 cm. If the triangle is a scalene triangle, which could be the measure of the third side?

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About This Quiz & Worksheet

The worksheet/quiz combo here assesses your ability to identify the various properties of a scalene triangle. You'll be tested on what makes a scalene triangle unique and how this uniqueness is exhibited through angles and lengths.

Quiz & Worksheet Goals

This quiz will test you on the various components of scalene triangles, including:

  • Given only two sides' measurements, identify the third side length
  • Find the longest side in relation to angle measurements
  • Identify the greatest angle with only information about side lengths

Skills Practiced

  • Interpreting information - verify that you can read information regarding three angle measurements and identify a scalene triangle
  • Information recall - access the knowledge you gained regarding a triangle's angle-to-side length correspondence
  • Knowledge application - use your knowledge to answer questions about which angle is opposite the shortest side

Additional Learning

Review information regarding scalene triangles by reading the lesson called What is a Scalene Triangle? -Definition, Properties & Examples. The lesson's objectives include:

  • Understand what constitutes a scalene triangle through illustrations
  • Know why it's important to learn scalene triangles' properties
  • Show real world examples of scalene triangles