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Congruency of Isosceles Triangles: Proving the Theorem

Instructions:

Choose an answer and hit 'next'. You will receive your score and answers at the end.

question 1 of 3

If two sides of a triangle are congruent, then which of the following statements MUST be true?

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1. If two angles of a triangle are congruent, then which of the following statements must be true?

2. In an isosceles triangle, which of the following are congruent?

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About This Quiz & Worksheet

An isosceles triangles is one in which two of the sides are congruent, but how can you tell? This quiz/worksheet combo will ask you questions about the proofs relating to the sides and angles of an isosceles triangle.

Quiz & Worksheet Goals

Find out how well you understand the following:

  • The names of the sides and angles of an isoceles triangle
  • Proof of congruent sides
  • Proof of congruent angles
  • Statements about a triangle that must be true based on a given image

Skills Practiced

This quiz and worksheet will help to test the following skills:

  • Reading comprehension - ensure that you draw the most important information from the related lesson on proof for congruency
  • Problem solving - use acquired knowledge to solve practice problems relating to isosceles triangles
  • Interpreting information - verify that you can read information regarding the sides and angles of isosceles triangles and interpret it correctly

Additional Learning

The lesson accompanying these assessments, which is titled Congruency of Isosceles Triangles: Proving the Theorem, takes a closer look at this mathematical concept.This lesson will help you:

  • Define an isosceles triangle
  • Prove that two sides of an isosceles triangle are congruent
  • Prove that two angles in an isosceles triangle are congruent
  • Understand the concept of converse proof
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