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Complete the statements to find the measurements of La and Lb.

Complete the statements to find the measurements of La and Lb.-example-1
User Maruful
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1 Answer

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27 votes

Answer:

see explanation

Explanation:

∠ a and 150° are a linear pair and sum to 180° , then

∠ a + 150° = 180° ( subtract 150° from both sides )

∠ a = 30°

the sum of the 3 angles in a triangle = 180° , then

∠ b + ∠ a + 60° = 180° , that is

∠ b + 30° + 60° = 180°

∠ b + 90° = 180° ( subtract 90° from both sides )

∠ b = 90°

User Vlince
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