Lesson Example Discussion Quiz: Class Homework |
Step-5 |
Title: Perimeter of Traiangle |
Grade: 8-a Lesson: S1-L3 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
The perimeter of an isosceles triangle is 15 units. Find out the length of the third side of the triangle if the equal sides measure 4 units each. |
|
2 |
Step |
Given, Perimeter of isosceles triangle (P) |
\$15\$ units |
3 |
Formula: |
Perimeter of Isosceles triangle |
Perimeter = 2 * (length of equal side) + length of the third side |
4 |
Step |
Substitute the values |
\$15 = (2 \times 4) + c\$ |
5 |
Step |
Here,we find out the third side (c) |
\$15 = 8 - c\$ |
6 |
Step |
After simplification |
\$c = 15 -8 = 7 \$ units |
7 |
Step |
The length of the third side of the isosceles triangle is |
\$7\$ units |
8 |
Answer |
D |
|
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