Lesson Example Discussion Quiz: Class Homework |
Step-4 |
Title: Angle(Types of angles) |
Grade: 4-a Lesson: S2-L1 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
If ∠A and ∠B are complementary, and the measure of ∠B is 60°, what is the measure of ∠A? |
|
2 |
Step |
Given that the measure of ∠B is |
60° |
3 |
Step |
Sum of complementary angles is |
90° |
4 |
Step |
Complementary angles |
∠A + ∠B = 90° |
5 |
Step |
Substitute the ∠B value is |
∠A + 60° = 90° |
6 |
Step |
subtract 60° on both sides |
∠A + 60° - 60° = 90° - 60° |
7 |
Step |
Now, solve for ∠A |
∠A = 30° |
8 |
Step |
So, the measure of ∠A is 30°. |
|
9 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
10 |
Choice.A |
This answer is accurate because the calculation is done correctly |
30 degrees |
11 |
Choice.B |
This is not correct because they do not represent the measure of ∠A in this particular scenario |
45 degrees |
12 |
Choice.C |
If ∠B is 60° and ∠A and ∠B are complementary, ∠A must complete 90°. Hence, ∠A is 30°, not 60° so this is not correct |
60 degrees |
13 |
Choice.D |
This is not correct because they do not represent the measure of ∠A in this particular scenario |
32 degrees |
14 |
Answer |
Option |
A |
15 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
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