Calculate Isosceles Triangle Perimeter with Side Lengths 9 and 3

The two legs of the triangle are equal.

Calculate the perimeter of the triangle.

999333AAABBBCCC

❤️ Continue Your Math Journey!

We have hundreds of course questions with personalized recommendations + Account 100% premium

Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Determine the perimeter of the triangle
00:03 Equal sides according to the given data
00:07 The triangle's perimeter equals the sum of its sides
00:13 Substitute in the side values and solve for the perimeter
00:19 This is the solution

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

The two legs of the triangle are equal.

Calculate the perimeter of the triangle.

999333AAABBBCCC

2

Step-by-step solution

Since the two legs are equal, we know that:

AB=AC=9 AB=AC=9

The perimeter of the triangle is equal to the sum of all sides, therefore:

AB+AC+BC AB+AC+BC

Now let's substitute the known data into the formula and calculate:

9+9+3=18+3=21 9+9+3=18+3=21

3

Final Answer

21

Practice Quiz

Test your knowledge with interactive questions

In a right triangle, the side opposite the right angle is called....?

🌟 Unlock Your Math Potential

Get unlimited access to all 18 Triangle questions, detailed video solutions, and personalized progress tracking.

📹

Unlimited Video Solutions

Step-by-step explanations for every problem

📊

Progress Analytics

Track your mastery across all topics

🚫

Ad-Free Learning

Focus on math without distractions

No credit card required • Cancel anytime

More Questions

Click on any question to see the complete solution with step-by-step explanations