Lesson Example Discussion Quiz: Class Homework |
Step-5 |
Title: Perimeter of Traiangle |
Grade: 1400-a Lesson: S3-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) length of equal side is |
\$15\$ units \$4\$ units |
3 |
Formula: |
Perimeter of Isosceles triangle |
\$"Perimeter" = 2 times ("length of equal side") + "length of the third side"\$ |
4 |
Step |
Substitute the values into the formula |
P = \$15 = (2 \times 4) + c\$ |
5 |
Step |
Now, solve for c: |
15 = 8 - c c = 15 - 8 c = 7 units |
6 |
Step |
The length of the third side of the isosceles triangle is 7 units. |
|
7 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
8 |
Choice.A |
This is incorrect because it does not satisfy the perimeter equation 2a + c = 15 |
1 units |
9 |
Choice.B |
This is incorrect because it does not satisfy the perimeter equation 2a + c = 15 |
12 units |
10 |
Choice.C |
This is incorrect because it does not satisfy the perimeter equation 2a + c = 15 |
10 units |
11 |
Choice.D |
It is correct because it satisfies the given perimeter condition |
7 units |
12 |
Answer |
Option |
D |
13 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
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