Answer:
El pentágono tiene 5 diagonales.
El octágono tiene 20 diagonales.
El decágono tiene 35 diagonales.
Explanation:
El número de diagonales (
) de un polígono de 
lados está descrito por la siguiente expresión:
(1)
A continuación, calculamos el número de diagonales para cada polígono:
(i) Pentágono (
)
(ii) Octágono (
)
(iii) Decágono 
Answer:
A/D would be the best answers.
Explanation:
The ethnic groups are not proportionately represented. Instead of a federal system the government has always been a unitary one.
Answer:
collision
Explanation:
Most volcanoes form at the boundaries of Earth’s tectonic plates. These plates are huge slabs of the Earth’s crust and upper mantle, which fit together like pieces of a puzzle. These plates are not fixed, but are constantly moving at a very slow rate. They move only a few centimeters per year. Sometimes, the plates collide with one another or move apart.
The first layer is unconformity i think
