Lesson Example Discussion Quiz: Class Homework |
Step-1 |
Title: Angles |
Grade: 1400-a Lesson: S3-L8 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
If three angles 2x, x, and x together form a straight angle, find the angles. |
|
2 |
Step |
Given that straight angles are |
2x , x and x |
3 |
Hint |
Straight angles = 180° |
2x + x + x = 180° (given straight angle) |
4 |
Step |
Combine like terms |
4x = 180° |
5 |
Step |
Now, solve for x |
x = \$(180°)/4\$ x = \$45°\$ |
6 |
Step |
Substitute the x value in angle 2x |
\$2\times45°\$ = \$90°\$ |
7 |
Step |
There are three angles |
\$90°, 45°, 45°.\$ |
8 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
9 |
Choice.A |
It is the correct option. The sum is 120°, not 180° |
45°, 45°, 30° |
10 |
Choice.B |
It is correct because the sum of the angles is 180°, satisfying the condition for angles in a straight line |
90°, 45°, 45° |
11 |
Choice.C |
It is the correct option. The sum is 160°, not 180° |
45°, 45°, 70° |
12 |
Choice.D |
It is the correct option. The sum is 110°, not 180° |
45°, 35°, 30° |
13 |
Answer |
Option |
B |
14 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
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