Answer: discarding A₀ = 0° ( because this is not a rotation) You have 6 angles for symmetrical rotation, so the order of rotational symmetry is is 6.
Answer:
d
Step-by-step explanation:
Answer:
<em>The required values are a = 29°, b = 20°</em>
Step-by-step explanation:
<u>Angles and Lines</u>
The image shows two lines crossing at a point where three angles are marked: 57°, 7b-17, and 2a-1.
It can be noted that 57° and 7b-17 are linear angles whose sum is 180°:
57° + 7b - 17° = 180°
Solving for b:
7b = 180° + 17° - 57°
7b = 140°
b = 140°/7 = 20°
b = 20°
It can also be noted that 57° and 2a-1 are vertical angles (opposite angles). Vertical angles are congruent, thus:
57° = 2a - 1°
Adding 1:
2a = 58°
a = 29°
The required values are a = 29°, b = 20°
9514 1404 393
Answer:
1
Step-by-step explanation:
The constant multiplier of k in the term "k" is 1.
The coefficient is 1.