Quadrilaterals Test

Result

Quadrilaterals Test - 9

Score
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out of -
Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
1 / -0

If the angles of a pentagon are x°, 2x°, 2x°, 2x°, 3x°, then the value of x is

A
50°

B
54°

C
60°

D
64°

Solution

Sum of angles of a pentagon = (2 × 5 - 4) 90
= 6 × 90
= 540°
Sum of the given angles = 10x
10x = 540°
x = 54°
Question 2
1 / -0

If the sum of the interior angles of a polygon is 30 right angles, then the number of sides is

A
15

B
16

C
17

D
18

Solution

Sum of the angles of polygon = (2n - 4) 90
Hence, (2n - 4) × 90 = 30 × 90
Or (2n - 4) = 30
2n = 34
n = 17