Use a protractor.
It depends on the angle not all obtuse angles measure the same. To measure an angle you use a protractor.
Use a protractor
A protracter
use a protractor
We would typically use a sextant to measure the angle of a star above the horizon.
A sextant.
If you absolutely needed to measure an angle to find out its degree measure, you would use a protractor.
Astronomers measure the parallax angle of a planet or star to determine its distance from Earth. By observing the apparent shift in position of the object against the background stars as the Earth orbits the Sun, astronomers can calculate the angle and use it to estimate the object's distance.
Use a protractor.
Use a protractor.
A protractor
To determine your latitude in the northern hemisphere using a star, measure the angle between the horizon and the star using a sextant. This angle is called the star's altitude. If you know the star's declination (which is constant), subtract it from 90 degrees minus the star's altitude to find your latitude.
It depends on the angle not all obtuse angles measure the same. To measure an angle you use a protractor.
put the protractor on the vertex and look up at the degree's and look belowacute angle =has a measure between 0 degree's and 90 degree'sright angle =has a measure of 90 degree'sobtuse angle = has a measure between 90 degree's and 180 degree'sstraight angle = has a measure of 180 degree'sthat's how you use a protractor to measure angles.
There are special angle-measuring instruments which you can use to measure the angle.
a protractor