Question

75. 250
I a pair of set, a triangle is with angles :
A 30°, 60°, 90°
(B30°, 30°, 45°
c) 75. 25. 80°
(D) 65,15 100​

Answer 1

Answer:

75. 250

I a pair of set, a triangle is with angles :

A 30°, 60°, 90°

(B30°, 30°, 45°

c) 75. 25. 80°

(D) 65,15 100

Answer 2

Correct Question :- Which one of pair of set does not form a triangle with angles :

A 30°, 60°, 90°

(B30°, 30°, 45°

c) 75. 25. 80°

(D) 65,15 100

Solution :-

we know that,

• sum of all angles of a triangle is equal to 180° .

so, checking given options we get,

A) 30°, 60°, 90°

→ 30° + 60° + 90°

→ 90° + 90°

→ 180° .

therefore, given pair of set are angles of a triangle .

B) 30°, 30°, 45°

→ 30° + 30° + 45°

→ 60° + 45°

→ 105° ≠ 180°

therefore, given pair of set are not angles of a triangle .

C) 75°, 25°, 80°

→ 75° + 25° + 80°

→ 100° + 80°

→ 180° .

therefore, given pair of set are angles of a triangle .

A) 65°, 15°, 100°

→ 65° + 15° + 100°

→ 80° + 100°

→ 180° .

therefore, given pair of set are angles of a triangle .

Hence, Option (B) is pair of set that does not form a triangle with angles .

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