Practices your ability to estimate angles and your knowledge of vertical angles corresponding angles and angles in a triangle. Recognize angles as geometric shapes formed wherever 2 rays share a common endpoint. A Triangle Has 180 Supplementary Angles.
Also the angles of a scalene triangle have different measures.
A Triangle Has 180 Supplementary Angles. Measure angles in whole-number degrees using a protractor. Give the angle a name usually a lower-case letter like a or b or sometimes a Greek letter like a alpha or th theta 2. Angles that have a common vertex and whose sides are formed by the same lines.