Areas of triangles

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Finding lengths of sides of triangles

Area and Perimeter of Rectangles

rebelmaths

Areas of triangles

rebelmaths

Ratio of sides of rectangles

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rebelmaths

Area and perimeter of triangles.

Area and perimeter of rectangles

Questions on angles on parallel lines (vertically-opposite, alternate, corresponding and co-interior), and angles along a straight line and in a circle.

Finding lengths of sides of triangles

Finding lengths of sides of triangles

Find the $x$ and $y$ components of the resultant force on an object, when multiple forces are applied at different angles.

Finding lengths of sides of triangles

Finding the lengths and angles within a right-angled triangle using: pythagoras theorem, SOHCAHTOA and principle of angles adding up to 180 degrees.

Another example of finding the $x$ and $y$ components when multiple forces are applied at different angles to a particle.

Find the $x$ and $y$ components of the resultant force on an object, when multiple forces are applied at different angles.

A block lies on rough horizontal ground. The coefficient of friction is given and students find the maximum value of friction $F_{\text{MAX}} = \mu R$. This is then used to determine the magnitude of force that must be exceeded to achieve movement when the force is applied horizontally and at two different angles to the horizontal.

Ratio of sides of rectangles

Convert degrees to radians and radians to degrees.

A question testing the application of the Cosine Rule when given three side lengths. In this question, the triangle is always acute. A secondary application is finding the area of a triangle.

A question testing the application of the Cosine Rule when given three side lengths. In this question, the triangle is always acute. A secondary application is finding the area of a triangle.

Finding lengths of sides of triangles

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