A centimeter is less than a meter.
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An angle greater than 90° and less than 180° is called an obtuse angle.
It's the "less than" sign [ < ] above the "equals" sign [ = ].≤When you see it, you read it " ... less than or equal to ... ". That's the same as " ... no more than ... "
An angle that measures more than 90 degrees but less than 180 degrees is called an "obtuse" angle. Note Angles less than 90 degrees are called "acute" angles. An angle that is exactly 90 degrees is called a "right" angle. Angles that are more than 90 degrees but less than 180 degrees are call "obtuse" angles. An angle that is exactly 180 degrees is called a "straight line". Angles that are more than 180 degrees and less than 360 degrees are called "reflex" angles.
No. A millimeter, or mm, is smaller than a meter, or m. A millimeter is actually a thousandth of a meter, so it is MUCH smaller than a meter.
19 + n < 42