Young geometers get practice with the algebra of angles in an extensive skills practice learning exercise. Supplementary, complementary, and vertical angle relationships are used, along with parallel lines cut by a transversal and angle sum of a triangle. This learning exercise accomplishes all of this without wordy instructions and is informally divided into around a dozen small and approachable sections (each building from easier to harder problems).

Concepts

angles, supplementary angles, complementary angles, parallel lines, transversal, vertical

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Additional Tags

math

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Instructional Ideas

• Great for skills remediation
• Would make a good activity for a substitute teacher

Classroom Considerations

• The odd-numbered answer key is printed on the bottom of the last page
• Not enough room between problems to effectively show work on the worksheet itself
• Ability to solve two-step equations with combining like terms required

Pros

• Thorough skill review and practice
• Problems in each section build in complexity

Cons

• Numbers 16, 23, 25, 26, 27, 31, and 32 should ask learners to solve for x, not find the measure of angle x (there is no angle x)
• Diagrams need an indication of "not to scale"
• Parallel line symbol did not transfer to pdf correctly on the bottom of the third page and top of the fourth.
• No even numbered answer key for teacher use

Common Core

7.G.B.5 8.G.A.5