Math Problem Statement
Solution
The given figure shows two triangles forming an "hourglass" shape. You're asked to find the measure of angle , with two known angles at the bottom: and . Here's how we solve it:
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Step 1: Use the Triangle Sum Theorem. In any triangle, the sum of the angles is always . For the lower triangle, let's call the third angle at the top of this triangle .
The sum of the angles in the lower triangle is: Solving for :
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Step 2: Use Vertical Angles. Vertical angles are congruent, meaning they have the same measure. Angle and angle are vertical angles, so:
Thus, the measure of angle is .
Would you like further explanation on any of the steps or concepts involved?
Here are 5 related questions for further exploration:
- What is the Triangle Sum Theorem and how is it applied?
- What are vertical angles and why are they always equal?
- How do you calculate angles in non-triangle shapes?
- If one of the angles in the lower triangle was changed, how would that affect ?
- Can the concept of complementary and supplementary angles be applied in this problem?
Tip: Remember that vertical angles are always equal when two lines intersect, which is a helpful rule in geometry!
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Math Problem Analysis
Mathematical Concepts
Geometry
Angles
Vertical Angles
Triangle Sum Theorem
Formulas
Sum of angles in a triangle = 180°
Theorems
Triangle Sum Theorem
Vertical Angles Theorem
Suitable Grade Level
Grades 6-8
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