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

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

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

Among an equilateral triangle, a square, a regular hexagon and a circle, all with the same perimeter, which has the largest area?

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? .

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

Make the following number sequences, from the sequence of equilateral triangles, squares, regular pentagons and so on, of regular polygons: Number of sides 3,4,5,.........Sum of interior angles Sum of exterior angles One interior angle One exterior angle

Make the following number sequences, from the sequence of equilateral triangles, squares, regular pentagons and so on, of regular polygons: Number of sides