Answer: 30º
Step-by-step explanation: Draw a line of 5cm. Draw another line at an end that is 8cm and has an angle of 90º between them. Join the ends of the lines. Measure the smallest angle and it should be 30º.
You can think of an hour and a half as 75% itself already because you have 3/4 or three thirty minute periods. So every 1/4 is a 30 minute period, and if you multiply 1/4 by 4 you get 4/4 which you ten can convert to 2 hours or 4, 30 minute time periods. (I’m sorry if I explained this in a very confusing manner). It will take Amelia 2 hours in total to finish her drawing.
Answer:
Step-by-step explanation:
∵ ABCD is a rhombus
∴ AC is ⊥ on BD
∴ ΔAEB is right angled triangle
The answer is what in the world
<span>A regular polygon is, by definition, a polygon with congruent interior angles and sides. Thus, if we rotate n-gon about its centre, we will repeat the polygon n times before it comes back to its original position.
a. The interior angles are congruent to their exterior angles.
This means that all angles are 90 degrees, so
true for a square or rectangle,but FALSE for a 25-gon.
b.All the diagonals are congruent.
It is true for all regular polygons, but not sufficient to make the polygon regular.
Counter example: A rectangle has all diagonals congruent, but it's not a regular quad. So FALSE.
c.Opposite pairs of sides are parallel.
All even-number sided regular polygons will satisfy this property, but not sufficient to make a polygon regular. Counter example: A rectangle with different adjacent sides. So FALSE.
In the case of a 25-gon, there are no "opposite" sides.
d. All interior angles and all sides are congruent.
This will undoubtedly create a regular polygon, since it satisfies the definition of a regular polygon. If we rotate it about its centre, we can repeat the same 25-gon 25 times. So TRUE</span>
