Today, the sum of the ages of bea and her sister is 18. what would be the sum of their ages next year?

1. what are the missing reasons in the proof 2. it's in the second picture and 3

Select the lengths in centimeters that would form a right triangle

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