Reflectional symmetry<span> is also called bilateral, line </span>symmetry<span> or mirror </span>symmetry. It occurs when a line is drawn to divide a shape in halves so that each half is areflection<span> of the other. Some shapes or objects, such as circles, squares and triangles, have one or more lines of </span>symmetry<span>. Mark as brainliest if u can thanks</span>
Translations, reflections, and rotations is the set
of transformations you can use to check whether two polygons are congruent.
<span>
Reflection
is flipping an object across a line without changing its size or shape.
Rotation
is rotating an object about a fixed point without changing its size or shape.
Translation
is sliding a figure in any direction without changing its size, shape or
orientation.</span>
The correct answer between all
the choices given is the last choice or letter D. I am hoping that this answer
has satisfied your query and it will be able to help you in your endeavor, and
if you would like, feel free to ask another question.
In 20 minutes, the angle swept by a minute hand is calculated as
(20/60) x 360° = 120°
The length of the minute hand = 36 ft
To calculate the distance moved by the minute hand, we solve for the fraction of the circumference of a circle swept by the minute hand in going through this 20 min.
we use the expression
Distance moved by the tip of the minute hand d = (θ/360) x 2πR
where
θ is the angle swept in the 20 minutes = 120°
R is the length of the minute hand, which is the radius of the circle formed if the minute hand moves completely in a 360° motion round the clock.
R = 36 ft
substituting values, we have
d = (120/360) x (2 x 3.142 x 36) = <em>75.408 ft</em>
