Polygons
Parallelogram
Submitted by vladimir.arzt on Thu, 11/07/2024 - 16:02Forces
Submitted by vladimir.arzt on Thu, 11/07/2024 - 15:31Rhombus
Submitted by vladimir.arzt on Sat, 10/19/2024 - 15:49Right Trapezoid I
Submitted by vladimir.arzt on Sat, 10/19/2024 - 13:16Area of Plane Shapes on a Grid
Submitted by michaela.bailova on Tue, 05/21/2024 - 20:242010018004
Level:
C
A rectangle-shaped land has dimensions \(5 \times 8\,\mathrm{cm}\) on a map with scale \(1:500\). The owner increased the size of his land by buying some land from his neighbor. The new land has dimensions \(7\times 9\,\mathrm{cm}\) on the map. Find the actual increase of the perimeter of the land (i.e. find the increase in the length of the fence required to enclose the whole land). Give your answer in meters.
\(30\,\mathrm{m}\)
\(15\,\mathrm{m}\)
\(40\,\mathrm{m}\)
\(60\,\mathrm{m}\)
2010018003
Level:
B
The number of diagonals in a polygon is five times bigger than the number of sides of this polygon. Find the number of vertices of this polygon.
\(13\)
\(15\)
\(10\)
\(12\)
2010018001
Level:
B
The measure of the interior angle in a regular polygon is \(150^{\circ}\). Find the number of vertices of this polygon. In the figure the interior angle (marked in red) of a regular hexagon is shown.
\(12\)
\(15\)
\(18\)
\(8\)
2010015010
Level:
B
For a regular octagon find the interior angle. In the figure a regular octagon with an interior angle marked in red is shown.
\(135^{\circ}\)
\(120^{\circ}\)
\(150^{\circ}\)
\(45^{\circ}\)