Lesson Example Discussion Quiz: Class Homework |
Step-2 |
Title: Angles(Interior & Exterior) |
Grade: 4-a Lesson: S2-L2 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
In the given image if 1 is 125 degrees, calculate an angle of 4. |
|
2 |
Step |
in the given image the interior angle are 3 , 4 , 5 , 6. |
|
3 |
Step |
exterior angle are 1 , 2 , 7 , 8 |
|
4 |
Step |
In the images the sum of exterior and interior angles is equal to 180 degrees |
interior + exterior = 180° |
5 |
Step |
The angle 1 is exterior angle and the and the adjecent angle 4 is interior angle we know the formula |
1 + 4 = 180° |
6 |
Step |
subsitute one value in the equation we get the value of 4 |
4 = 180 - 125 |
7 |
Step |
After simplification |
4 = 55 |
8 |
Step |
The interior angle 1 is |
55° |
9 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
10 |
Choice.A |
This is not correct because the correct value for angle 4 is 55°, not 60° |
60° |
11 |
Choice.B |
This is correct because the calculation for angle 4, as shown above, gives a result of 55° |
55° |
12 |
Choice.C |
This is not correct because the calculation for angle 4, as shown above, gives a result of 55°, not 65° |
65° |
13 |
Choice.D |
This is not correct because it does not match the calculated value of angle 4, which is 55° |
75° |
14 |
Answer |
Option |
B |
15 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
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