15
1000
Triangles are the strongest structure in the world - most bridges etc include triangular metal parts to strengthen the bridge. I reccommend that you somehow create many triangles and support your textbook on top of these triangles.
two right triangles
if you need to know how many triangles are in a polygon ... just take the number of its sides and subtract for example. nonagon has 9 sides so it will be 9-2=7 so, a nonagon has 7 triangles
They are Similar triangles if they have the same angles. it they are exactily the same they are Equaltrial.
A Pentadecagon had 15 sides
A pentadecagon has 15 sides. (the prefixes pent=5, and deca=10)15
90
45
Fifteen.
i hate maths kate barney
Pentadecagon, Quindecagon, PentakaidecagonA polygon with fifteen sides can be called a pentadecagon.
it is called a pentadecagon ok? its like pentagon but its a pentadecagon.
The name of a 15 sided polygon is Pentadecagon.
A pentadecagon, which has 15 sides, can be analyzed for parallel lines by considering the sides. Each pair of opposite sides in a regular pentadecagon can be seen as parallel. Since there are 15 sides, the number of pairs of parallel sides is given by the formula ( \frac{n}{2} ) where ( n ) is the number of sides. Therefore, a regular pentadecagon has 7 pairs of parallel lines.
its a pentadecagon i.e, a polygon with 15 sides. in a regular pentadecagon each angle is of 156 degrees
90. Number of diagonals = number_of_sides × (number_of_sides - 3) ÷ 2 → For a Pentadecagon which has 15 sides: Number of diagonals = 15 × (15 - 3) ÷2 = 15 × 12 ÷ 2 = 90