Needed asap 20 points and mark brainlist four tangents are drawn from e to two concentric circles. a, b, c, and d are the points of tangency. name as many pairs of congruent triangles as possible and tell how you can show each pair is congruent.

Can you draw an isosceles triangle with only one 80 degree angle?

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

Find the roots of the equation below. x^2 - 6 + 9 = 0