Curriculum
Course: Mathematics — Second Preparatory
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Curriculum

Mathematics — Second Preparatory

Unit 1: Real Numbers

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Unit 2: Algebra

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Unit 3: Geometry

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Unit 4: Statistics

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Text lesson

The Isosceles Triangle

Mathematics — Second Preparatory

The Isosceles Triangle

Lesson summary

Lesson summary

  • An isosceles triangle has two equal legs, a base and a vertex angle.
  • The base angles are equal.
  • The altitude drawn from the vertex bisects the base and the vertex angle.
  • Base angle = (180° − vertex angle) ÷ 2.
The Isosceles Triangle · 5 / 5