Answer
Everyone likes a good laugh it's good for the heart, but when it becomes too much, don't be shy, stand up and tell the offender that's it, you've had enough and want to hear no more. If that person doesn't get the message either throw him or her out, or you leave. Watch them laugh then, I bet they don't laugh at all.
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Draw an asterisk in it. That is, draw a horizontal line halfway between the top and the bottom, draw a vertical line halfway between the two sides, draw diagonal lines fro the opposing corners.
draw triangle that has sides of lengths 3.6cm and 5.2cm and a 42* angle between these two sides
1
If you draw a straight line on a piece of paper and place a protractor over it you will see the reading is 180 degrees. In this sense a straight angle is 180 degrees.