Word (.docx)
Acrobat (.pdf)
Use angle relationships to find the value of a missing angle.
Clarifications:
Essential Understandings
Concrete:
- Given an angle measure, draw an angle.
- Recognize that a triangle consists of three angles that total 180 degrees.
- Recognize that the angle measure of a straight line is 180 degrees.
- Use a protractor to measure the missing angle.
- Understand the following concepts and vocabulary: acute, obtuse, right, straight line, transversal, vertical angles, corresponding angles, alternate interior angles, supplementary angles.
- Match or identify angle measurements.
- Describe triangles and parallel lines by telling about their shape, sides, lines, and angles.
- Use appropriate tools as needed.
- Use addition or subtraction to determine the missing angle measurement in triangles. (E.g., Angle A = 60 degrees, Angle B = 40 degrees, Angle A + Angle B = 100 degrees, therefore Angle C = 180 – 100 = 80 degrees).
- Identify vertical angles, corresponding angles, alternate interior angles.Understand that the angles are congruent.
General Information
Number: MAFS.8.G.1.AP.5a
Category: Access Points
Date Adopted or Revised:
06/14
Cluster:
Understand congruence and similarity using physical models, transparencies, or geometry software. (Major Cluster) :
Clusters should not be sorted from Major to Supporting and then taught in that order. To do so would strip the coherence of the mathematical ideas and miss the opportunity to enhance the major work of the grade with the supporting clusters.
Related Standards
This access point is an alternate version of the following benchmark(s).
Related Resources
Vetted resources educators can use to teach the concepts and skills in this access point.
Student Resources
Vetted resources students can use to learn the concepts and skills in this access point.
Parent Resources
Vetted resources caregivers can use to help students learn the concepts and skills in this access point.
