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Angle Addition Postulate

Grade 1145 min

Learning Objective

I can apply the angle addition postulate to solve for unknown angles using simple algebraic expressions.

Lesson Flow

Watch Video

5 min

1.4 Angle Addition Postulate with algebra

Unknown Channel

Practice

14 min

7 questions • Short answer

Exit Ticket

5 min

“If angle A measures (2x + 15)° and angle B measures (3x - 5)°, and they combine to form angle C which measures 100°, find the value of x. Show all work. Given that angle D measures (4y + 10)° and angle E measures (5y - 20)°, and they together equal 90°, determine the value of y. Show all work. ”

Teacher Guide

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  • Answer keys for all questions
  • Differentiation strategies
  • Extension activities
  • Printable student handouts

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