Understanding Angles and Angle Classification

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Explore the world of angles with illustrations of lines, rays, and segments. Learn about acute, right, obtuse, and straight angles, as well as concepts like congruent and vertical angles. Discover how to name angles and understand their measures based on degrees in a clear and structured manner.


Uploaded on Sep 30, 2024 | 0 Views


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  1. Draw the following: Line AB Line segment BC Ray FG

  2. LEQ: How do we classify angles?

  3. An angle is the union of two rays that share a common endpoint.

  4. There are 4 ways to name an angle: CED DEC E 3

  5. Acute angles have measures between 0 and 90 degrees

  6. Right angles have measures of exactly 90 degrees (indicated by a small square)

  7. Obtuse angles have measures between 90 and 180 degrees

  8. Straight Angle an angle measuring 180 degrees

  9. Right angle Straight angle Acute angle Obtuse angle

  10. Congruent angles are angles of the same measure(indicated by identical markings)

  11. Similar to the ruler postulate, if point B is in the interior of AOC, then m COB+m BOA=m COA (<AOC)

  12. Vertical angles are opposite congruent angles created by the intersection of two lines <1 and <3 are vertical angles <2 and <4 are vertical angles

  13. Adjacent angles are angles that share a common side, common vertex, and no common interior points. <KIH and <KIJ are adjacent angles

  14. Complementary angles are two angles whos measures sum to 90 . <TSU and <USV are complementary angles. If m<TSU=42 , what is m<USV? <TSU is the complement of <USV

  15. Supplementary angles are two angles whos measures sum to 180 . <TSU and <USV are supplementary angles. <TSU is the supplement of <USV. If m<TSU=120 , what is m<USV?

  16. Use the adjacent angles below to solve the following: m<HOK = 4x-6, m <KOB=6x+2, find x and m<HOK.

  17. Line up the bottom of the protractor with a side of the angle and center of angle with center of protractor. Extend the line of the other side and read the degree.

  18. p.40-41, 1-8,15,17,19,24-32 odds,43,45

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