how to make corresponding angles working model with led lights and metal nails

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This model shows corresponding angles. When a transversal cuts two parallel lines, angles in the same position form corresponding pairs.

Here, nails act as touch points. When I touch nail 1 and nail 5 together, the circuit completes and the LED glows. That means ∠1 and ∠5 are corresponding angles.

Materials Needed

Board & Structure

  • Thick chart board / foam board / cardboard
  • Scale, pencil, markers
  • Metal nails (4 nails for 4 angles)

Electrical Items

  • LEDs (4 LEDs for 4 pairs of corresponding angles)
  • Copper wire (thin)
  • 9V battery or 5V power bank
  • Battery clip
  • Conductive tape (optional)
  • Small switch (optional)
  • Hot glue / fevicol

Prepare the cardboard setup

  1. two parallel lines on the board using color paper
  2. one transversal cutting both lines using color paper .
  3. You will get 8 angles.
  4. Label them clearly: 1,2,3,4 at top intersection and 5,6,7,8 at bottom.

Fixing the Metal Nails

  1. Hammer one small metal nail at the vertex of each angle (1,2,3,4) (total 4).
  2. Ensure nail head is exposed so it can be touched by metal probe to close the circuit.
  3. Nails must not touch each other (avoid short circuits).

These nails will act as touch sensors.

Wiring the LEDs (Touch-to-Glow Logic)

Concept

You will create simple circuits where:

  • Touching one nail completes connection → current flows → LED lights.

For each Corresponding Angle pair:

Pairs are:
1 ↔ 5
2 ↔ 6
3 ↔ 7
4 ↔ 8

How the Model Works (Simple Explanation for Students)

  • Metal nails act as touch sensors.
  • When you touch one corresponding angles, using metal probe.
  • The circuit gets closed → LED turns ON.
  • This shows the two angles are corresponding angles.

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