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Station 2: Apply It – Triangle Solver
Concept Selection & Application Strategy
Apply the triangle angle-sum rule to solve for unknown angles in robotic arm triangles.
○ MODEL
◆ REPRESENT
◆ CHOOSE
★ JUSTIFY
Triangle Angle-Sum Rule:
The Triangle Angle-Sum Rule—also known as the Triangle Sum Theorem—states that the sum of the three interior angles in any triangle is always 180°. This is true for all types of triangles: acute, obtuse, right, equilateral, isosceles, and scalene.
The sum of the three interior angles in any triangle is always 180°.
Checklist:
I labeled all known sides and angles on each diagram.
I clearly identified what information is missing for each triangle.
I predicted the correct trigonometric strategy for each scenario.
I explained why I chose that strategy for each prediction.
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