0
Two parallel sides of the trapezium are 14m and 20m and the other sides are both 6m. What would be the angle between the 20m parallel side and the 6m other side And how did you work it out?
Wiki User
∙ 15y ago
You can easily see the trapezium is symmetrical.
Draw a vertical line starting where upper 14m line ends downwards.
Consider the triangle you got now. It's a right triangle, with one leg 3m (20-14/2) long and hypotenuse 6m long.
Ratio of that leg to hypotenuse is a/c = 0.5 = cos angle
To find angle, you have to find a value of angle for which cosine equals 0.5 (use arccosine function).
However if you look at trigonometry tables for most common angles, you can easily see its 60 deg.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
What is a quadrilateral with one pair of opposite sides parallel and the other pair of opposite sides congruent?
An isosceles trapezium
A trapezium of area 140 m has parallel sides 10cm apart and one of these sides is 16 cm long find the length of the other parallel sides?
The area of the trapezium cannot be 140 metres since the latter is a length, not an area. Suppose the area is 140 m2 = 1400000 cm2 Suppose the length of the second parallel side is x cm. Area of trapezium = 1/2*(sum of lengths of parallel sides*distance between them) ie 1400000 = 1/2*[(16+x)*10] 280000 = 16+x so x = 279984 cm = 2.79984 kilometres.
How do you calculate angle in a trapezium?
You need to use a protractor to measure the two angles at the ends of the base. The other two angles will be their supplements.
What are trapezoids?
A trapezium (as it is known in English) is a quadrilateral which is a closed plane figure with four straight sides. It has one pair of parallel sides. The other pair of sides is not parallel (otherwise the figure would become a parallelogram).
What are the conditions for coplanar parallel forces?
1- the forces must act parallel to each other not at the same line of action 2- if they form an angle then you must make resoltution and take the force which is prependicular to theline joining between the point of action
Does a trapezium have a right angle?
Only if it was a rectangle, but then we wouldn't usually call it a trapezium. A trapezium should have a long and a short side parallel to each other with two other sides joining the parallel ones.
What is the angle on a trapezium?
the answer is 27' * * * * * Yet another totally nonsensical answer by "The Community"! An angle on a trapezium can have any value between 0 and 180 degrees and the only additional requirement is that one of its adjacent angles is supplementary and that the other adjacent angle is not supplementary - these conditions ensure that there is only one pair of parallel sides..
What polygon has one set of parallel lines?
A trapezoid or, in Britain, a trapezium. Other than in Britain, a trapezium is a quadrilateral with no parallel sides at all.
What shape is a trapezium?
A trapezium is a shape with four sides. Of these, one pair of sides are parallel. The only restriction on the other pair is that they are not parallel (because you then have a parallelogram).
Is a parallelogram a trapezium?
NO!!!! Parallelogram : Two pairs of parallel lines ; The each pair of parallel lines is the same length. Trapezium ; One pair of parallel lines, that are not the same length. The other two sides can be the same length , but not parallel. Both figures/shapes are quadrilaterals.
What quadrilateral has a pair of parallel sides?
A quadrilateral that has only one pair of parallel sides (the other pair not parallel) is a trapezium.
What features does a trapezium?
A trapezium has one set of parallel lines and the one of them has the lines of symmetry but the other one doesn't have any. Trapezium doesn't have perpendicular lines
What is an iosocelus trapezium?
An isosceles trapezium has one pair of sides parallel to each other and the other pair that are of equal length (but facing in opposite directions). An isosceles trapezium can be imagined as an isosceles triangle whose top has been chopped off by a line parallel to its base.
What quadrilaterals have two parallel sides'?
Squares, rectangles, parallelograms and rhombuses have two parallel sides. The other two are also parallel. A trapezium has only two parallel sides.
What are the rules of a trapezoid?
A trapezium must have one pair of parallel sides and the other sides must not be parallel - since in that case it becomes a parallelogram.
Does a trapezium always have equal sides?
No. A normal trapezium has two parallel sides that are not equal in length, and two other sides joining the ends of the parallel sides which may be equal, but are usually not. If all four sides of a trapezium were equal in length, it would be called a rhombus as the sides would be parallel in pairs; and if the angles were 90° as well, it would be called a square.
How is a trapezoid different from other types of quadrilaterals?
A trapezium has one (and only one) pair of parallel sides.
