Math Problem Statement

Find x and the length of each side if ΔABC is an isosceles triangle with AB ≅ BC.

Solution

In the given problem, we have an isosceles triangle ABC\triangle ABC, where ABBCAB \cong BC. This means that sides ABAB and BCBC are equal in length.

Given information:

  • AB=4x3AB = 4x - 3
  • BC=2x+5BC = 2x + 5
  • CA=x+2CA = x + 2

Steps to solve:

  1. Set ABAB equal to BCBC since ABBCAB \cong BC:
    4x3=2x+54x - 3 = 2x + 5

  2. Solve for xx: 4x2x=5+34x - 2x = 5 + 3 2x=82x = 8 x=4x = 4

  3. Find the lengths of each side:

    • AB: AB=4x3=4(4)3=163=13AB = 4x - 3 = 4(4) - 3 = 16 - 3 = 13

    • BC: BC=2x+5=2(4)+5=8+5=13BC = 2x + 5 = 2(4) + 5 = 8 + 5 = 13

    • CA: CA=x+2=4+2=6CA = x + 2 = 4 + 2 = 6

Final answers:

  • x=4x = 4
  • AB=13AB = 13
  • BC=13BC = 13
  • CA=6CA = 6

Would you like a further breakdown of any steps or explanations?


Here are some related questions you might find useful:

  1. What are the properties of an isosceles triangle?
  2. How do we determine the angles in an isosceles triangle?
  3. Can you solve a similar problem if all side lengths involve variables?
  4. How do the angles in a triangle relate to the side lengths?
  5. What if ABAB and BCBC were not congruent—how would the solution change?

Tip: Always check if any additional conditions are given, such as angle congruency, as they may provide further insights into the problem.

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Math Problem Analysis

Mathematical Concepts

Algebra
Isosceles Triangle Properties

Formulas

AB = BC
Solve for x by setting 4x - 3 = 2x + 5

Theorems

Isosceles Triangle Theorem

Suitable Grade Level

Grades 7-9