The sum of the interior angles of a polygon is 2160°. The number of sides of the polygon is-
Sum of interior angles = 2160°
Solution:
Use the formula:
Sum of interior angles = (n − 2) × 180°
So,
2160 = (n − 2) × 180
Divide both sides by 180:
2160 ÷ 180 = 12
n − 2 = 12
n = 12 + 2 = 14
Correct answer is (c) 14).
English
150 Questions
150 Marks
150 Mins English English150 Questions150 Marks150 Mins English English150 Questions150 Marks150 Mins EnglishIn the given figure, AB is parallel to CD. Angle ABE = 64 degrees and angle CDE = 32 degrees. What is the value (in degrees) of angle BED?
In the given figure, AB is parallel to CD. What is the value (in degrees) of angle BEC?
In the given figure, AB is parallel to CD. Angle PAB = 65 degrees and angle DCP = 110 degrees. What is the value (in degrees) of angle APC?
In the given figure, AB is parallel to EF. ED is parallel to CB and angle APE is 60 degrees.
What is the value (in degrees) of angle EQC?
In the given figure, DE is parallel to BC. Angle ABC = 40 degrees. Angle ADE = 130 degrees. What is the value (in degrees) of angle BAD?
In the given figure, AB is parallel to CD. What is the value (in degrees) of x?
Which of the following statements is wrong ?
The complement of the supplement of 138° is-
In the given figure AB = AC and ∠ACD = 105°, then ∠BAC is equal to -
The sum of the interior angles of a polygon is 2160°. The number of sides of the polygon is-
Suggested Test Series
Suggested Test Series
In the given figure, AB is parallel to CD. Angle ABE = 64 degrees and angle CDE = 32 degrees. What is the value (in degrees) of angle BED?
In the given figure, AB is parallel to CD. What is the value (in degrees) of angle BEC?
In the given figure, AB is parallel to CD. Angle PAB = 65 degrees and angle DCP = 110 degrees. What is the value (in degrees) of angle APC?
In the given figure, AB is parallel to EF. ED is parallel to CB and angle APE is 60 degrees.
What is the value (in degrees) of angle EQC?
In the given figure, DE is parallel to BC. Angle ABC = 40 degrees. Angle ADE = 130 degrees. What is the value (in degrees) of angle BAD?
In the given figure, AB is parallel to CD. What is the value (in degrees) of x?
Which of the following statements is wrong ?
The complement of the supplement of 138° is-
In the given figure AB = AC and ∠ACD = 105°, then ∠BAC is equal to -
The sum of the interior angles of a polygon is 2160°. The number of sides of the polygon is-
