Use the protractor to measure the angles. You can turn the protractor with your mouse. Be sure to place it in the correct position before measuring, just like I mentioned in the video the other day. Write the answers inside the angles. Remember, you have just learned about acute, right angle, obtuse and straight angles. An acute angle is less than 90 degrees. so when you are measuring the angles be sure to focus on what the angles are. If you need any help, send your teacher a comment.