Find the length of side a. round to the nearest tenth.

a) 12

b) 378.4

c) 18.3

d) 19.5

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

What is the rotational symmetry of a wheel

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