Which relationships describe angles 1 and 2? Select each correct answer.
complementary angles
adjacent angles
vertical angles
supplementary angles

Find the length of the following tangent segments to the circles centered at o and o' whose radii are 5 and 3 respectively and the distance between o and o' is 12. what is the tangent segment of cd?

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

In what organelle does photosynthesis take place?