28. Z1 and 2 2 are vertical angles. If mZ1 = (6x + 11)° and mZ2 = (10x – 9), find m21. mZ1 =​

What was istanbul called before he ottomans conquered the city in the 15th century

Given: circle a externally tangent to circle b. how many possible common tangents to circles a and b can exist? 2 3 4

On this map of the united states the letter h indicates high pressure and the letter l indicates low pressure . select the black arrow that accurately shows the direction of the wind.