0
8
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
How many right angles are in PENTAGON?
Here are two ways. One practical and one mathematical. Practically, sketch a pentagon like a house with outward leaning walls. Label the top point A and the B, C, D, E clockwise. Lay your pencil on side EA with the pointy end pointing to the right. Holding the pencil still at A, swing the blunt end down and around until it is lined up along line AB. The sharp end is now pointing up and left. Now hold the part of the pencil at B still and swing the sharp end down until the pencil is lined along BC with the sharp end pointing down. Now hold the pencil at c and swing the blunt end left and down to line up the pencil along side DC. Then hold the pencil still at D and swing the sharp end up and round to the left to line the pencil along DE. Lastly, hold the pencil at E and swing the blunt end up and round to the right until we're back lined up along side EA. Now you know what to do, Do it again and watch how the pencil turns. It rotates one and a half complete times. That is the sum of the internal angles .. 360 +180 degrees. So a pentagon has 6 rightangles in its internal angles. Mathematically, draw the same pentagon and put a dot near the middle. Now connect each of the five vertices to the middle dot with straight lines. You have drawn five triangles. Now a triangle has 180 degrees in it and so in that pentagon there a five triangles and so five times 180 degrees altogether. 180 degrees is two righttangles, so we have ten rightangles. However the angles of the five triangles gathered at the centre point were added just to do this process, so they don't count. These five angles make up one complete circle which is four rightangles. So we have to subtract four from the ten rightangles we had and arrive at six rightangles in the pentagon. Fortunately, the two methods both give a 6 rightangle answer. Both methods work for polygons of any shape or size.
How many syllables in weren't?
"Weren't" is one syllable. The full form "were not" is two syllables.
How many syllables in they've?
"They've" has one syllable. The full form "they have" has two syllables.
A petrol tank is half full. If I add 16 liters it will be two thirds. How many liters does the tank hold when full?
96 litres.
How many syllables in its?
There is one syllable in "its" The full form "it is" has two syllables.
Does earth rotate on its axis two full turns a day or one full turn a day?
One
An automotive engines canshaft rotates at?
The engine's camshaft rotates at half the speed of the crankshaft. The crankshaft turns two full turns for every one full turn of the camshaft.
What is a 1080 on a bmx bike?
1080 is a trick where you and the bike rotate(like a pirouette) during a jump. one full turn is 360 (degrees of rotation), two full turns are 720 (degrees of rotation) and 1080 is 3 full turns of rotation.
How many turns out on the fuel screw on a 1992 Honda nighthawk 250?
two and half turns (so it is 5half turns)
How many lines can you draw between two points?
Directly with no turns: 1 With turns: infinite
How many quarter turns are in 180 degrees?
Two.
What is the proper dialing sequence for a mosler 3 combination gun safe. circa 1979?
Clear by turning at least four full turns to the left Two full turns right stop on third turn One full turn left stop on second turn
How many right angles are there in two and a quarter turns?
There are nine.
When in the year is rosh hashanah celebrated?
The date in the Hebrew calendar is the first of the month of Tishrei. This typically turns out to coincide with mid-to late-September. It also turns out to be within a day or two of two weeks before the first full moon after the September equinox (the "Harvest Moon"). That full moon is almost always the first night of Sukkot.
How many degrees are in two right - angle turns?
one hundred and eighty degrees
How many minutes in 2 full days?
There are 2880 minutes in two full days.
How many degrees are in four 30 degree turns?
If all four turns are in the same direction, then the result is the same as a single 120-degree turn. If three are in the same direction and one is in the opposite direction, then the result is the same as single 90-degree turn. If two are left turns and the other two are right turns, then the result is the same as no turns at all.
