An irregular pentagon can have 5 vertices and two right-angles.
All four sided shapes in 2-d have 360 degrees when you sum all the internal angles
The sum of internal angles of a shape is given by the equation 180(n-2) where n is the number of sides. For a pentagon, which has 5 sides, this would be 180x3 = 540. The sum of external angles of a shape is given by (180-(x/n))n where n is the number of sides and x is the sum of internal angles. For a pentagon, this would be 5x(180-540/5) = 360
True. When there are only two answers, so guessing should give you a 50% or 1 out of 2 chance of getting the right answer.
2 edges (curved), 0 corners, and 3 faces (one of which is not flat) ------------------------------------------------------------------------------------------------- A cylinder has 0 vertices (corners), 0 edges, and 2 faces. If you need convincing, my proof is Euler's formula, which which relates all three and is true for all solids in Euclidean 3-space: V + F - E = 2 0 + 2 - 0 = 2 You cannot consider the curved boundaries when counting faces or edges.
It's not because of a natural law or something; it's inherent in the structure of space, and the shapes of triangles, hexagons, and squares. Your question is like asking, "why does 2 + 2 = 4?" There's not a reason, they just do because that's how things are.Also, they aren't the only shapes that tile, just the only regular polygons that tile.>>M.T.
An irregular 5 sided pentagon can be constructed including two right angles.
a right angled triangle.
Square
That's three different shapes: a rectangle, a rhombus and a trapezoid respectively.
4 sides 4 right angles 2 diagonals 4 vertices
Quadrilaterals are plane (2-D) shapes. They are bounded by four straight sides. They have four vertices and the sum of the internal angles at these vertices add to 360 degrees.
Congruent shapes.
a square and a rectangle
Both have 2 pairs of opposite parallel sidesBoth have 4 interior right angles
A square or rectangle are the only regular polygons, but many other shapes have two right angles and two parallel lines.
A rectangle has two right angles. In a rectangle, opposite sides are equal in length and all interior angles are 90 degrees. This geometric property distinguishes a rectangle from other shapes, such as squares or parallelograms, which may also have right angles but do not necessarily have exactly two right angles.
no numbers have the same number of edges and vertices