Integer Solutions in Right Triangles

Integer Solutions in Right Triangles

Assessment

Interactive Video

Mathematics

9th - 10th Grade

Hard

Created by

Thomas White

FREE Resource

The video tutorial explores a geometric problem involving right triangles with integer side lengths where the area equals the perimeter. The instructor derives a system of equations using the Pythagorean theorem and algebraic manipulation. By isolating variables and applying Simon's Favorite Factoring Trick, the instructor finds integer solutions for the triangle side lengths. The video concludes with a summary of the solutions, highlighting the unique properties of the triangles 6-8-10 and 5-12-13.

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6 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main focus of the geometric system problem discussed in the video?

Finding right triangles with integer lengths where the area equals the perimeter

Determining the angles of a right triangle

Solving for the hypotenuse of a right triangle

Calculating the area of any triangle

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which theorem is used to establish the relationship between the sides of the right triangle in the problem?

Law of Cosines

Law of Sines

Triangle Inequality Theorem

Pythagorean Theorem

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in solving the system of equations algebraically?

Isolating the variable z

Guessing the values of x and y

Drawing a diagram

Using a calculator

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is Simon's Favorite Factoring Trick (SSFT) used for in this problem?

To find the hypotenuse of a triangle

To factor expressions and simplify equations

To determine the angles of a triangle

To calculate the area of a triangle

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a solution for the right triangle problem discussed?

9, 12, 15

7, 24, 25

3, 4, 5

6, 8, 10

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of the solutions 6, 8, 10 and 5, 12, 13 in the context of the problem?

They represent the largest possible triangles

They are the smallest possible triangles

They are the only integer solutions where the area equals the perimeter

They are examples of non-right triangles