Geometry: Collinearity, Betweenness, and Assumptions (Level 4 of 4)

This video tutorial covers four examples involving angle measurements. It begins with solving for angle ABC using algebraic expressions and geometric relations. The second example involves finding angle ABD using a ratio in a right angle. The third example uses a 1:3:2 ratio to find angles in a straight angle. The final example involves solving a system of equations to determine angle measures. The video concludes with a preview of the next series on writing simple proofs.

How do you find the measures of angle 1, angle 2, and angle 3 given their algebraic expressions?

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What method is used to solve the system of linear equations in the last example?

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What is the final answer for the measures of angle 1, angle 2, and angle 3?

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