Math Problem Statement
Given: ∠F is complementary to ∠FGJ, ∠H is complementary to ∠HGJ, and GJ bisects ∠FGH. Conclusion: ∠F ≅ ∠H.
Solution
The problem in the image can be solved through angle relationships and properties of bisectors in geometry.
Given:
- ∠F is complementary to ∠FGJ.
- ∠H is complementary to ∠HGJ.
- GJ bisects ∠FGH.
Conclusion:
We need to prove that ∠F ≅ ∠H (i.e., ∠F is congruent to ∠H).
Solution:
-
Since GJ bisects ∠FGH, we know that:
- ∠FGJ ≅ ∠HGJ (by the definition of an angle bisector, the bisected angles are congruent).
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From the complementary angle relationships:
- ∠F + ∠FGJ = 90° (since ∠F is complementary to ∠FGJ).
- ∠H + ∠HGJ = 90° (since ∠H is complementary to ∠HGJ).
-
Since ∠FGJ ≅ ∠HGJ (from step 1), we substitute this into the complementary relationships:
- ∠F + ∠HGJ = 90°.
- ∠H + ∠HGJ = 90°.
-
Therefore, we can conclude that:
- ∠F = ∠H (by subtracting ∠HGJ from both equations).
Thus, the conclusion ∠F ≅ ∠H is correct.
Do you want any further details or clarifications?
Related Questions:
- How does the concept of complementary angles help in proving congruence in other geometric problems?
- What other properties of angle bisectors can be used in solving geometric proofs?
- How does congruence of angles relate to the congruence of triangles?
- Can you apply the concept of bisectors in problems involving right triangles?
- How would the conclusion change if GJ did not bisect ∠FGH?
Tip:
When working with angle bisectors, always remember that the bisected angles are congruent, and this property is often key in proving further angle relationships.
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Math Problem Analysis
Mathematical Concepts
Geometry
Angle Bisectors
Complementary Angles
Formulas
Sum of complementary angles = 90°
Theorems
Angle Bisector Theorem
Congruence of Angles
Suitable Grade Level
Grades 9-10