Find the perimeter of a square if half of a diagonal is equal to 8 inches

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 three dimensional figures has a circle as it’s base

Zahra runs a 500-meter race at a constant speed. which graph shows her distance from the finish line during the race?