The figure shows a,regular pentagon and a regular hexagon put together. How, much is `angle PQR` ?

Make the following number sequences, from the sequence of equilateral triangles, squares, regular pentagons and so on, of regular polygons: Sum of outer angles

The figure shows fwo chords drawn on either sides of a dlameter:How much is the angle the other chord makes with the diameter?

Make the following number sequences,from the sequence of equilateral triangles, squares, regular pentagons and so on, of regular polygons: Sum of inner angles

Make the following number sequences, from the sequence of equilateral triangles, squares, regular pentagons and so on, of regular polygons: One outer angle

The picture shows an equilateral triangle cut into halves by a line through a vertex. How much less than the perimeter of the whole triangle is this? .

Draw a regular pentagon and then a triangle of the same area. Calculate the area.

Make the following number sequences, from the sequence of equilateral triangles, squares, regular pentagons and so on, of regular polygons: One inner angle

In the picture, the tangent to the circumcircle of a regular pentagon through a vertex is shown. Calculate the angle which the tangent makes with the two sides of the pentagon through the point of contact.