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Triangle Angles on a Line

Open to everyone until Wednesday, September 30

To keep it, print it while it is open.

The three angles of a triangle can be placed together. They then form a straight line, which is 180 degrees.

In the picture

  1. The triangle: a three-sided shape with three angles
  2. The red angle: one angle of the triangle, detached
  3. The blue angle: another angle of the triangle, detached
  4. The green angle: the third angle of the triangle, detached
  5. The straight line: the three detached angles placed together

Examples

  • A triangular slice of pizza: its three angles can be arranged into a straight line.
  • A triangular road sign: its three angles together form a straight line.

Carry on in the app

Three questions on this lesson, to check the idea stuck. Free in the app while the lesson is in the free week.

At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.

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Maths, Age 12