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MATHS Assertion (A) & Reason (B) MCQ

Understanding Quadrilaterals · UP Board (UPMSP) STD 8 (UPMSP - English Medium). 60 questions.

Questions · Page 2 of 2

Assertion (A) & Reason (B) MCQ

MCQ 511 Mark
Assertion (A): Diagonals does a quadrilateral have are 2.
Reason (R): In geometry a quadrilateral is a four-sided polygon, having four edges (sides) and four corners (vertices).
  • A
    Both A and R are true and R is the correct explanation of A.
  • ✓
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: B.
Both A and R are true but R is not the correct explanation of A.
B
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MCQ 521 Mark
Assertion (A): All the squares are rhombuses
Reason (R): All the parallelograms are rhombuses.
  • A
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • ✓
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: C.
A is true but R is false.
C
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MCQ 531 Mark
Assertion (A): All the parallelograms are rectangles
Reason (R): All the rhombuses are parallelograms.
  • A
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • ✓
    A is false but R is true.
Answer
Correct option: D.
A is false but R is true.
D
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MCQ 541 Mark
Assertion (A): All the angles of a rectangle are equal.
Reason (R): The opposite sides of a rectangle are not equal.
  • A
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • ✓
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: C.
A is true but R is false.
C
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MCQ 551 Mark
Assertion (A): The measures of the three angles of a quadrilateral are 65°, 75° and 85°. The measure of the fourth angle is 135.
Reason (R): The formula for calculating the size of an exterior angle in a regular polygon is: 360.
  • A
    Both A and R are true and R is the correct explanation of A.
  • ✓
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: B.
Both A and R are true but R is not the correct explanation of A.
B
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MCQ 561 Mark
Assertion (A): The sum of the measures of the exterior angles of any polygon is 360.
Reason (R): The formula for calculating the size of an exterior angle in a regular polygon is: 360.
  • ✓
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A.
A
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MCQ 571 Mark
Assertion (A): The number of sides of a triangle is 3
Reason (R): A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry.
  • ✓
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A.
A
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MCQ 581 Mark
Assertion (A): The angle sum of a convex polygon with number of sides 10 is 1440.
Reason (R): A convex polygon is a polygon that is the boundary of a convex set.
  • A
    Both A and R are true and R is the correct explanation of A.
  • ✓
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: B.
Both A and R are true but R is not the correct explanation of A.
B
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MCQ 591 Mark
Assertion (A): The sum of the measures of all the four angles of a quadrilateral is 360.
Reason (R): In geometry a quadrilateral is a four-sided polygon, having four edges (sides) and four corners (vertices).
  • ✓
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A.
A
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MCQ 601 Mark
Assertion (A): The angle sum of a convex polygon with number of sides 7 is $90^{\circ}$
Reason (R): A convex polygon is a polygon that is the boundary of a convex set.
  • A
    Both A and R are true and R is the correct explanation of A.
  • ✓
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: B.
Both A and R are true but R is not the correct explanation of A.
B
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Assertion (A) & Reason (B) MCQ - Page 2 - MATHS STD 8 Questions - Vidyadip