Question: Complete the two-column proof to show that the two triangles are similar.
Given: $FX \parallel YG$
Prove: $\triangle YOG \sim \triangle FOX$
1. State the problem:
We need to prove that $\triangle YOG$ is similar to $\triangle FOX$ given that $FX \parallel YG$.
2. Given:
$FX \parallel YG$ (Given)
3. Use the property of parallel lines:
Since $FX \parallel YG$, the corresponding angles formed by the transversal $OY$ are congruent.
4. Identify congruent angles:
$\angle FOX \cong \angle YOG$ (Corresponding Angles Postulate)
5. Reflexive property:
$\angle O$ is common to both triangles, so $\angle O \cong \angle O$ (Reflexive Property of Congruence)
6. Apply AA similarity criterion:
Since two pairs of corresponding angles are congruent, $\triangle YOG \sim \triangle FOX$ (AA similarity criterion).
Final proof table:
Statements: 1) $FX \parallel YG$ 2) $\angle FOX \cong \angle YOG$ 3) $\angle O \cong \angle O$ 4) $\triangle YOG \sim \triangle FOX$
Reasons: 1) Given 2) Corresponding Angles Postulate 3) Reflexive Property of Congruence 4) AA similarity criterion