31
trapezoids
polygon: it refers to a figure that has closed sides and straight edges with more than 3 sides
Congruent figures are similar - in sides as well as angles. Corresonding angles of similar figures congruent but their sides are not. The sides are all in some fixed ratio. [If that ratio is 1, the figures are congruent.]
the any sides of figures.....
Corresponding Sides
What AREN'T the names of the tow sides?
1120
A Quadrilateral. Figures that have four equal sides are called squares. Whereas, other figures that have four unequal sides are called quadileterals
Here are some figures that have a number of sides that is a composite number:Two-dimensional figures includesquarehexagonoctagonnonagonThree-dimensional figures includetetrahedroncubeoctahedronicosahedron
2 dimensional (plane) figures can have three or more straight edges as sides. 3 dimensional (solid) figures can have four or more plane sides (faces). They can have fewer sides if the sides are not straight.
Pentagons
(35*(35-3))/2 (35*32)/2 1120/2 560 diagonals