Given: ​△ABC​ with side lengths a, b, and c, and height h

Prove: ​Area=1/2 ab sin C

Aregular hexagon rotates counterclockwise about its center. it turns through angles greater than 0° and less than or equal to 360°. at how many different angles will the hexagon map onto itself?

The verbal translation for the difference of m and 7 increased by 15

Which one ? is the answer and how to find this answer