what moon phase would you find when the earth, sun, and moon make a 90-degree angle
to each other?

First quarter or the quarter moon in the phase when the earth, sun and moon make a 90- degree angle.

Explanation:

In this phase the moon arises in the noon and sets in the midnight. They can be seen in the after noon or even in the early evening high in the sky. The shape of the moon is half or can say the lighted half. In simple language the moon seen in the day time is the first quarter moon. Here, in this phenomenon the sun and the moon makes the 90- degree angle earth.

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer

it would be kevlar ^^