A bag contains 39 colored marbles. There are six blue marbles, 14 red marbles, eight yellow marbles, and 11 clear marbles. What is the ratio of blue marbles to red marbles.

Which of the following are accepted without proof in a logical system? check all that apply.

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2

Which of the following can be used to explain a statement in a geometric proof?