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# 7th Grade Math / Lesson 3: Angle Relations

 Angles What will we be learning in this lesson? In this lesson, you will learn more about angles and their measures. Vocabulary words are found in this purple color throughout the lesson. Remember to put these in your notebook.

 Angles Congruent angles are angles that have the same measure. Vertical angles have rays going in opposite directions from the same vertex.In this drawing, angles A and D are vertical angles. Another pair of vertical angles is angles B and C. Vertical angles are always congruent. Adjacent angles share a vertex and a side. In the drawing above, angles A and B are adjacent. Another pair of adjacent angles is angles A and C. Another pair of adjacent angles is angles B and D. Are there any more pairs of adjacent angles in the drawing?

 Angles Complementary angles are two angles that add up to 90 degrees. (Which is a right angle.) Supplementary angles are two angles that add up to 180 degrees. (Which is a straight angle.)Be sure to go back to lesson 1 if you do not remember the correct notation for naming angles.

 Can you identify an angle and its measure? Go back to the classroom to get to your homework and any other items you need to attend to.