Math Problem Statement

The side lengths of four triangles are shown in the table. Select all the triangles that are right triangles. Triangle Side Lengths | 610 810 1 || 7 7 13 ||| 313 413 513 IV 5 6 11

Solution

To determine if each triangle is a right triangle, we can use the Pythagorean Theorem, which states that for a right triangle with sides aa, bb, and hypotenuse cc, the following must hold true:

a2+b2=c2a^2 + b^2 = c^2

Let’s evaluate each triangle:

Triangle I: Side lengths 610, 810, and 1

  • Here, the largest side is c=810c = 810, and a=610a = 610, b=1b = 1.
  • Applying the Pythagorean theorem: 6102+12=372100+1=372101610^2 + 1^2 = 372100 + 1 = 372101 8102=656100810^2 = 656100 Clearly, 372101656100372101 \neq 656100, so Triangle I is not a right triangle.

Triangle II: Side lengths 7, 7, and 13

  • The largest side is c=13c = 13, and a=7a = 7, b=7b = 7.
  • Applying the Pythagorean theorem: 72+72=49+49=987^2 + 7^2 = 49 + 49 = 98 132=16913^2 = 169 Since 9816998 \neq 169, Triangle II is not a right triangle.

Triangle III: Side lengths 313, 413, and 513

  • The largest side is c=513c = 513, and a=313a = 313, b=413b = 413.
  • Applying the Pythagorean theorem: 3132+4132=97969+170569=268538313^2 + 413^2 = 97969 + 170569 = 268538 5132=263169513^2 = 263169 Since 268538263169268538 \neq 263169, Triangle III is not a right triangle.

Triangle IV: Side lengths 5, 6, and 11

  • The largest side is c=11c = 11, and a=5a = 5, b=6b = 6.
  • Applying the Pythagorean theorem: 52+62=25+36=615^2 + 6^2 = 25 + 36 = 61 112=12111^2 = 121 Since 6112161 \neq 121, Triangle IV is not a right triangle.

Conclusion:

None of the triangles listed are right triangles.

Would you like more details, or do you have any questions?

Here are some related questions to explore:

  1. What is the definition of an acute triangle?
  2. How can we determine if a triangle is obtuse?
  3. How does the Law of Cosines relate to the Pythagorean theorem?
  4. Can a triangle with equal side lengths be a right triangle?
  5. What are the properties of a scalene triangle?

Tip: When dealing with triangle problems, always check whether the largest side could be the hypotenuse by testing it with the Pythagorean Theorem.

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Math Problem Analysis

Mathematical Concepts

Geometry
Right Triangles
Pythagorean Theorem

Formulas

a^2 + b^2 = c^2

Theorems

Pythagorean Theorem

Suitable Grade Level

Grades 8-10