Question

Read the Source/Text given below and answer any four questions:
Once the Maths teacher of class IX D told students that today we will prove that the sum of all
three angles is 180". As shown in the figure, he told to draw any triangle ABC in the notebook.
Further side BC was extended to D.
Now the teacher said to draw CE||BA.
Further angles were named 1 to 5 as shown in the figure.
Now answer the following questions:
i. BA||CE and AC is the transverse line, So L 1 is equal to which angle?
22
a
b. 23
c 24
1. 25
ii. 22 is equal to which angle?
L2
b. 23
. L4
d. 5
ii. What is value of 23 +24+ 25?
180
b. 120
c. 200
.360
iv. What is value of ECD= Z4+ Z57
a 23+ 25
b. 21+22
c. 22+23
d. 23+ 24
v.What is value of Z1+ 22+ 23?
a. 23+ 24+ 25 180
b.
360
c 23+ 24- 100
d. 280


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Answer 1

ANSWER:-

i) c) angle 4

ii) d) angle 5

iii) a) 180°

iv) angle 4+ angle 5 ( Answer is Not in the Option But Our teacher Said that it was a Printing Mistake, Because This Question We wrote as Test )...

• I Hope it's Helpful •

Answer 2

Answer:

i) c) angle 4

ii) d) angle 5

iii) a) 180°

iv) ∠ECD=∠ABC

Step-by-step explanation:

• The angle 1 is equal to angle 4 as alternate angle.
• Angle 2 is equal to angle 5 as corresponding angle.
• The sum of angle in a triangle is always 180°.
• Here, ∠ECD=∠ABC [∵pair of corresponding angle]
• Hence, the answers are as above.

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