Prove: AEFG is isosceles

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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### Problem Statement

#### Geometry

2) Given: Isosceles trapezoid with \( \overline{BC} \parallel \overline{AD} \), \( \overline{GP} \perp \overline{AB} \), \( \overline{EQ} \perp \overline{CD} \), \( P \) and \( Q \) are midpoints of \( \overline{AB} \) and \( \overline{CD} \) respectively.

Prove: \( \triangle EFG \) is isosceles.

### Diagram Description

A diagram is provided which illustrates the geometrical configuration. Here is a detailed breakdown of the diagram:

1. **Isosceles Trapezoid**: 
   - The quadrilateral \( BCAD \) is shown as an isosceles trapezoid.
   - \( \overline{BC} \parallel \overline{AD} \).

2. **Perpendicular Lines**:
   - \( \overline{GP} \) is perpendicular to \( \overline{AB} \).
   - \( \overline{EQ} \) is perpendicular to \( \overline{CD} \).
   
3. **Midpoints**:
   - \( P \) is the midpoint of \( \overline{AB} \).
   - \( Q \) is the midpoint of \( \overline{CD} \).

4. **Intersection Points**:
   - The lines \( \overline{GP} \) and \( \overline{EQ} \) intersect at point \( F \).

5. **Additional Points**:
   - \( E \) is a point on line \( CD \).
   - \( G \) is a point on line \( AB \).

The task is to prove that triangle \( \triangle EFG \) is isosceles.
Transcribed Image Text:### Problem Statement #### Geometry 2) Given: Isosceles trapezoid with \( \overline{BC} \parallel \overline{AD} \), \( \overline{GP} \perp \overline{AB} \), \( \overline{EQ} \perp \overline{CD} \), \( P \) and \( Q \) are midpoints of \( \overline{AB} \) and \( \overline{CD} \) respectively. Prove: \( \triangle EFG \) is isosceles. ### Diagram Description A diagram is provided which illustrates the geometrical configuration. Here is a detailed breakdown of the diagram: 1. **Isosceles Trapezoid**: - The quadrilateral \( BCAD \) is shown as an isosceles trapezoid. - \( \overline{BC} \parallel \overline{AD} \). 2. **Perpendicular Lines**: - \( \overline{GP} \) is perpendicular to \( \overline{AB} \). - \( \overline{EQ} \) is perpendicular to \( \overline{CD} \). 3. **Midpoints**: - \( P \) is the midpoint of \( \overline{AB} \). - \( Q \) is the midpoint of \( \overline{CD} \). 4. **Intersection Points**: - The lines \( \overline{GP} \) and \( \overline{EQ} \) intersect at point \( F \). 5. **Additional Points**: - \( E \) is a point on line \( CD \). - \( G \) is a point on line \( AB \). The task is to prove that triangle \( \triangle EFG \) is isosceles.
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