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Which of the following sets of numbers could represent the three sides of a triangle? Answer \( \begin{array}{ll}\{6,20,26\} & \{15,17,32\} \\ \{13,24,35\} & \{5,18,25\}\end{array} \)

Ask by Ford Davies. in the United States
Jan 23,2025

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Answer

Only the set {13, 24, 35} can represent the three sides of a triangle.

Solution

To determine which sets of numbers can represent the sides of a triangle, we use the **Triangle Inequality Theorem**. This theorem states that for any three sides \( a \), \( b \), and \( c \) of a triangle (where \( c \) is the longest side): \[ a + b > c \] Let's evaluate each set: 1. **\(\{6, 20, 26\}\)** - Sort the sides: 6, 20, 26 - Check: \( 6 + 20 = 26 \) - Since \( 6 + 20 \) is **not greater** than 26, this **cannot** form a triangle. 2. **\(\{15, 17, 32\}\)** - Sort the sides: 15, 17, 32 - Check: \( 15 + 17 = 32 \) - Since \( 15 + 17 \) is **not greater** than 32, this **cannot** form a triangle. 3. **\(\{13, 24, 35\}\)** - Sort the sides: 13, 24, 35 - Check: \( 13 + 24 = 37 \) - Since \( 13 + 24 > 35 \), this **can** form a triangle. 4. **\(\{5, 18, 25\}\)** - Sort the sides: 5, 18, 25 - Check: \( 5 + 18 = 23 \) - Since \( 5 + 18 \) is **less than** 25, this **cannot** form a triangle. **Conclusion:** Only the set \(\{13, 24, 35\}\) satisfies the Triangle Inequality Theorem and can represent the sides of a triangle. **Answer:** Only the set {13, 24, 35} can represent the three sides of a triangle.

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Extra Insights

To check if a set of numbers can represent the sides of a triangle, you can use the triangle inequality theorem. This states that for any triangle with sides \(a\), \(b\), and \(c\), the following must be true: 1. \(a + b > c\) 2. \(a + c > b\) 3. \(b + c > a\) Using this theorem, you can evaluate the given sets. After applying these rules, you'll find that \(\{6, 20, 26\}\) does satisfy the triangle inequality (6 + 20 > 26 is false, so it's not a triangle). However, \(\{15, 17, 32\}\) does not (15 + 17 is not greater than 32), while \(\{13, 24, 35\}\) and \(\{5, 18, 25\}\) do represent valid triangles. Exploring the fascinating world of triangles, did you know they are the simplest polygon, possessing only three sides and three angles? This simplicity doesn’t just help in construction and architecture, but also in fields like art and computer graphics, proving that sometimes the simplest shapes can create the most complex designs! Triangles have this unique relationship with math known as the Pythagorean theorem, which only applies to right triangles. It can unlock many mysteries in real life! For instance, if you're trying to build a ramp or a roof, understanding how to calculate the lengths of the sides will ensure it's structurally sound and visually appealing! So grab those tools and enjoy crafting!

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