Question
A series of patterns of shaded and unshaded small triangles is shown.
  1. Which pattern has 99 shaded triangles?
  2. Find the number of unshaded triangles in Pattern 48.
  3. Find the total number of triangles in Pattern 43.
5 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

(c)

Click button first when a symbol is required. X

A series of patterns of shaded and unshaded small triangles is shown.
  1. Which pattern has 99 shaded triangles?
  2. Find the number of unshaded triangles in Pattern 48.
  3. Find the total number of triangles in Pattern 43.