Student calculates $\bar{y}$ for a triangle.  Must use similar triangles get element $dA$.

Locate the centroid of a rectangle, triangle, and semi-circle on a coordinate grid.

Find the centroid of a shape made up of a rectangle and two triangles.

Find the centroid of a shape made from a rectangle, triangle, and circle.

Draws a triangle based on 3 side lengths.

Draws a triangle based on 3 side lengths and randomises asking for hypotenuse or not.

Find the tension required to hold a pole at a specified angle.

Homework Set.  Three problems to brush up on trig skills.  Right triangles and sine and cosine law.

Finding the arc length of a sector of a circle when given the radius of the circle and angle of the sector.

Finding the arc length of a sector of a circle when given the radius of the circle and angle of the sector.

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testing sin, cos, tan of angles that are negative or greater than 2pi radians that result in nice exact values. 

exact value of testing sin, cos, tan of angles that are negative or greater than 360 degrees that result in nice exact values. 

Solve a random oblique triangle for sides and angles.

Using the unit circle definition of sin, cos and tan, to calculate the exact value of trig functions evaluated at angles that depend on 0, 30, 45, 60 or 90 degrees.

Homework set.  Calculate Moment of Inertia for I beams, channels, angles, etc.

Use the parallelogram rule to solve a force triangle.

Draws a triangle based on 2 angles and a side length.

Draws a right angled triangle based on a length and an angle.

Draws a triangle based on 3 side lengths.

Draws a right angled triangle based on 2 lengths.

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Draws a triangle based on 3 side lengths.  Randomises asking angle or side.

Draws a triangle based on 3 side lengths.  Randomises asking angle or side.

Draws a triangle based on 3 side lengths.  Randomises asking angle or side.

Find the diagonal or one side of a rectangle using Pythagoras' theorem.

Draws a triangle based on 3 side lengths and randomises asking for hypotenuse or not.