CBSE 8th class maths with solutions

ORAL QUESTIONS CLASS VIII MATHS TOPIC :- GEOMETRY

01. Define a Polygon .
02. How many sides are there in Quadrilateral ?
03. How many sides are there in Octagon ?
04. What is a regular Polygon ?
05. What is a Diagonal?
06. What is the sum measures of angles of the Convex Quadrilateral ?
07. How many sides does Heptagon has ?
08. Say True / False: The polygon with minimum number of sides is three .
09. Tell the formula to find sum of all interior angles of a polygon.
10.  What are the Maximum number of   right angles in the right angled triangle?
11.  What is the sum of interior angles of a Parallelogram ?
12.   What is a Parallelogram ?
13.  What is Rhombus ?
14.  What is Rectangle ?
15.  Name the closed figure with 4 sides .
16.  What is the number of sides in hexagon ?
17.   How many Diagonals does a regular hexagon have?
18.   What is the Sum of interior angles of a Pentagon ?
19.   What is the sum of the measures of the external   angles of any polygon ?
20.   Name the Quadrilaterals whose diagonals bisect each other ?

ANSWER KEY
1.      A   Simple closed curve made up of only line segments is called a polygon .
2.      Four
3.      8
4.      A Regular polygon has equal sides and equal angles .
5.      A diagonal is a line segment connecting non- consecutive vertices of a polygon
6.      360^o7.      7
8.      True
9.      (n – 2 ) x 180^o10.   One
11.   360^o12.   A parallelogram is a quadrilateral whose opposite sides are equal .
13.   A parallelogram whose all sides are equal is called rhombus.
14.    A parallelogram each of whose angles measure 90o is called Rectangle .
15.   Quadrilateral
16.   Six
17.   Nine
18.   540^o19.   360^o20. Parallelogram , Rhombus , Square , Rectangle

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