Answer:
Explanation:
<u>A: keystone </u>
Keystone is also known as capstone, <u>and it is the stone at the highest point of the arch construction.</u> It is placed as the final piece to lock the construction not to fall, as it is distributing the weight of the arch.
<u>B: voussoir</u>
<u>Voussoir is the name of the whole arched part,</u> including keystone and <u>impost</u>. It is the complete curved element, and the blocks included are most usually made out of stone.
<u>C: impost </u>
The impost is the name for the block that lies at the end of the column, a<u>nd it is also used for the block that is the start of the arch-shaped element</u> of the arch. It is the base of the voussoir.
Kinda need the diagram/image to give evidence. Light frequency is separated from the singular white beam to the color spectrum from red to blue in frequency strength.
They wiil cause the economy to go down financially.<span />
