What quadrilateral have perpendicular sides?

How Many Is 100 Greater Than 700? What is the area of a parallelogram with a base of 8 centimeters and a height of 5 centimeters? What number does the prefix milli represent? What was the Law Satan Broke? How do you estimate 9.72? What would hit the ground first 1tonne of bricks or 1 kg of bricks? What is the sum of the interior angles measures of a 15agon? How many yards are there in 5 feet 8 inches? What is the answer of 9000000 plus 123456789102345678890? How Arithmetic Logic Unit is helpful in CPU? Why does August have 31 days? What is an antonym for rarity? What is standard notation of 3.2 trillion? Which term below describes how close a measurement is to the true value? How do you calculate the area and perimeter of shapes? What is the standard form of fiftytwo million six hundred eight thousand thirtynine? What are the eight standards of critical thinking used for? How many such pairs of digits are there in number 421579368 each of which has as many digits between them in the number as when they are arraNGED in according order? How you write 22000000 in expanded form? What is the ratio of people infected with AIDS?