- A12
- B20
- C16
- D18
Step-by-Step Solution
The four diagonals cross at 3 points inside. Sorting the triangles by size from smallest to largest gives 2, 3, 6, 6 and 3 of each size: .
Answer: B) 20
In the pentagon shown, two diagonals start from the top corner and two more from the upper-right corner. Find the number of triangles in the figure.
Competition practiceCounting Figures
Master this topic in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Counting Figures practice questions
More Counting Figures practice
A regular hexagon has its three longest diagonals drawn. How many triangles does the…Alternate corners of a hexagon are joined to form a triangle inside it. How many…A six-pointed star is drawn inside a hexagon, with its points at the hexagon's corners.…A kite has both its diagonals drawn. Count the triangles in the figure.A rhombus has both diagonals drawn and one more line across its upper half, parallel to…