What's is the square root of -1

-i
i
-1
1

In the surface area formula for cylinders which expressionrepresents the lateral area

An angle that measures between 90 and 180° is called a(,

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer