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:

  1. ∠F is complementary to ∠FGJ.
  2. ∠H is complementary to ∠HGJ.
  3. GJ bisects ∠FGH.

Conclusion:

We need to prove that ∠F ≅ ∠H (i.e., ∠F is congruent to ∠H).

Solution:

  1. Since GJ bisects ∠FGH, we know that:

    • ∠FGJ ≅ ∠HGJ (by the definition of an angle bisector, the bisected angles are congruent).
  2. From the complementary angle relationships:

    • ∠F + ∠FGJ = 90° (since ∠F is complementary to ∠FGJ).
    • ∠H + ∠HGJ = 90° (since ∠H is complementary to ∠HGJ).
  3. Since ∠FGJ ≅ ∠HGJ (from step 1), we substitute this into the complementary relationships:

    • ∠F + ∠HGJ = 90°.
    • ∠H + ∠HGJ = 90°.
  4. 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:

  1. How does the concept of complementary angles help in proving congruence in other geometric problems?
  2. What other properties of angle bisectors can be used in solving geometric proofs?
  3. How does congruence of angles relate to the congruence of triangles?
  4. Can you apply the concept of bisectors in problems involving right triangles?
  5. 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