Question

19.
20.
Assertion
Reason
13 is an irrational number.
Square root of a positive integer which
is not a perfect square is an irrational
number.
If the sides BC of a A ABC is produced The sum of the angles of a triangle is
to D, then L ACD = LA + LB. 180°. @
If a ray CD stands on a line AB such If a ray CD stands on a line AB then L
that - ACD = L BCD then L ACD = ACD + L BCD = 180°. (8)
90°.
21.​

Answer 1

Answer:

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Step-by-step explanation:

Assertion

Reason

13 is an irrational number.

Square root of a positive integer which

is not a perfect square is an irrational

number.

If the sides BC of a A ABC is produced The sum of the angles of a triangle is

to D, then L ACD = LA + LB. 180°. @

If a ray CD stands on a line AB such If a ray CD stands on a line AB then L

that - ACD = L BCD then L ACD = ACD + L BCD = 180°. (8)

90°.

21.