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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 5 - Mathematics
Diagonals of Polygons

The number of diagonals in a polygon = 1/2 N(N-3), where N is the number of sides of a polygon

Example: How many diagonals does a hexagon have?

The number of diagonals in a polygon = 1/2 N(N-3)
Here N = 6
= 1/2 x 6 (6-3)
= 3 x 3
= 9
Answer: 9


Directions: Answer the following questions. Also draw draw and calculate how many diagonals does triangle, rectangle, square, parallelogram, trapezoid, rhombus, kite, pentagon, hexagon, heptagon, octagon, nonagon and decagon have.
Q 1: How many diagonals does a heptagon have?

16
14
15

Q 2: How many diagonals does a rhombus have?

3
4
2

Question 3: This question is available to subscribers only!

Question 4: This question is available to subscribers only!


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