Final answer:
Angles are formed when two lines intersect and can be measured in degrees using a protractor.
Step-by-step explanation:
Angles are an important concept in mathematics. They are formed when two lines intersect, and they can be measured in degrees. There are different types of angles, such as acute angles (less than 90 degrees), obtuse angles (greater than 90 degrees but less than 180 degrees), right angles (exactly 90 degrees), and straight angles (exactly 180 degrees).
For example, if you have a right angle, it would look like the letter 'L'. A protractor is a tool that can be used to measure angles accurately. You place the center of the protractor on the vertex of the angle and read the measurement on the outer edge of the protractor.