Videos, worksheets, solutions and activities to help students learn about angles in Singapore Math.

In this lesson, we will learn

- what is an angle?
- what are angles on a straight line, angles at a point and vertically opposite angles?
- what is an isosceles triangle, an equilateral triangle and a right-angled triangle?
- what is the sum of angles in a triangle?
- how to draw different types of triangle?
- how to find unknown angles in a four-sided figure?
- how to draw a parallelogram, rhombus and trapezium?

Related Topics:

More Geometry Lessons, Singapore Math

Geometry - Introduction to angles

An explanation of what an angle is.

An explanation of what are angles on a straight line, angles at a point and vertically opposite angles.

What is an isosceles triangle, an equilateral triangle and a right-angled triangle?

Why is the sum of angles of a triangle = 180 degrees?

Learn how to draw an equilateral triangle using geometrical instruments.

Learn how to draw an isosceles triangle using geometrical instruments.

Geometry - Drawing triangles using instruments - Example 3

Learn how to draw a triangle using geometrical instruments.

How do you find unknown angles in a four-sided figure?

How do you find unknown angles in a four-sided figure?

How do you find unknown angles in a four-sided figure?

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