0
Add your answer:
Earn +20 pts
Why do architects and engineers use so many triangles in construction?
Triangles are rigid, quadrilaterals are not - a square can be "squashed" into rhombus.
What are the uses of quadrilaterals in daily life?
From ancient times, properties of quadrilaterals have been used especially in art, design and architecture. Diagonal of a rectangle divides it into two congruent triangles and the idea of congruency especially in triangles had been used by Egyptians to build The Great Pyramids of Giza!!!!! The idea of congruency of triangles initially from diagonal of quadrilaterals also helped Leonardo Da Vinci to paint the world famous 'Monalisa'!!!!! So, what other wonders do you want from quadrilaterals????!!!????
Why is hexagon so important?
Because hexagons are very strong and sturdy. AND they tile very well! Thats why Bees use the shape, and if anything needs to be sturdy they use that shape! Of course, triangles are more sturdy. Thats why every house or bridge etc. always uses triangles!
Is all rectangle are quadrilaterals?
No, quardrilateral means a shape having four sides, and triangle means a shape having 3 sides so no quardilateral is triangle * * * * * True, but the question had nothing to do with triangles! A kite or a rhombus are quadrilaterals but they are not rectangles. So, although some quadrilaterals are rectangles, not all are.
How many sides do 4 dodecagons 4 quadrilaterals and 4 triangles have altogether?
There are 12 sides in a dodecagon, 4 in a quadrilateral, and 3 in a triangle. So in 4 dodecagons, 4 quadrilaterals, and 4 triangles there are 4*12 + 4*4 + 4*3 = 48 + 16 + 12 = 76 sides altogether.
How many sides do 4 heptagons 2 quadrilaterals and 3 triangles have altogether?
A heptagon has seven sides, a quadrilateral has four, and a triangle has three. So 4 heptagons, 2 quadrilaterals, and 3 triangles have 4*7 + 2*4 + 3*3 sides = 28 + 8 + 9 sides = 45 sides.
How strong are rectangles for construction?
Not at all. All quadrilaterals can be skewed into parallelograms and so are not strong. They need to have a diagonal brace - effectively making two triangles.
Are Some triangles are quadrilaterals?
Well, first of all triangles can't be quadrilaterals because qaud means four and tri means 3. A triangle is a polygon. A triangle can not have any less or any more than 3 sides, but not all of them have to be the same length, so therefor it can defenitally not be a quadrilateral because it only has 3 sides and it doesn't have to be equal on all of the sides.
What is the polygon name of octahedron?
An octahedron is a closed 3-d shape with 8 polygonal faces. The faces can be triangles, quadrilaterals, pentagons, hexagons or heptagons. So there is no polygon name for an octahedron.
How many sides do 1 decagon 5 quadrilaterals 5 octagons and 5 triangles have altogether?
A decagon has ten sides, a quadrilateral has four, an octagon has eight, and a triangle has three. So in 1 decagon, 5 quadrilaterals, 5 octagons, and 5 triangles there are 1*10 + 5*4 + 5*8 + 5*3 = 10 + 20 + 40 + 15 = 85 sides altogether.
How many degrees in a poloygon?
say n is the number of sides in the polygon then 360/n is the number of degrees in the central angle for the triangles that make up the n-gon. then 180-(360/n) is the number of degrees in each triangle that are part of the angle counts. there are n triangles. so 180(n-2) sanity check says it works for triangles and quadrilaterals, so its probably good.
Must all quadrilaterals be 360 degrees?
Presumably you mean the sum of the included angles? If so, yes - they can all be cut into 2 triangles and the included angles of any triangle always add up to 180
