31 March: 90

Today is the 90th day of the year. 10 things you might not know about the number 90:

1. An angle measuring 90 degrees is called a right angle. This is because in a right triangle, the angle opposing the hypotenuse measures 90 degrees, with the other two angles adding up to 90. The interior angles of a rectangle or square measure 90 degrees each.
2. 90 degrees is also the latitude in degrees of the North and the South geographical poles.
3. 90 is the atomic number of thorium, a weakly radioactive metallic element with the symbol Th. It's is silvery in colour but tarnishes black when it is exposed to air.
4. +90 is the code for international direct dial phone calls to Turkey.
5. The M90 is the northernmost motorway in the UK. It runs from just south of the Queensferry Crossing to Perth in Scotland.
6. The longest Interstate Highway in the United States is Interstate 90. It is 3,020.54 miles (4,861.09 km) long and runs between Seattle and Boston.
7. Major League Baseball bases are 90 feet (27 m) apart.
8. In Roman numerals 90 is written as XC and in Binary it's 1011010.
9. Joe 90 is a British science-fiction television series created by Gerry and Sylvia Anderson. It follows the exploits of nine-year-old schoolboy Joe McClaine, who becomes a spy after his adoptive father invents a device (the BIG RAT) capable of recording expert knowledge and experience and transferring it to another human brain. Hence Joe can be armed with the skills and knowledge of the world's top academic and military minds, while appearing to be an innocent kid. Why he's called Joe 90 is debatable. According to the publicity for the show, he's the World Intelligence Network (WIN)'s 90th London based agent, but dialogue in the show says it's because the documents pertaining to the BIG RAT device are in a file entitled "File Number 90".
10. In numerology, the energy of the number 90 concerns humanitarianism, idealism, tolerance, justice and infinite potential. The person with 90 in their numerology profile has a vision of an ideal society which includes freedom of action and thought, career opportunities and financial sufficiency and tolerance.

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