Lines Angles And Triangles(5th Grade > Mathematics ) Questions and Answers
Explanation:-
Answer: Option A. -> One:
A
Sum of interior angles in a tringle = 180∘.
An obtuse angle measures more than 90 degrees but less than 180 degrees.
A triangle can have only one obtuse angle because if there were two obtuse angles, then the sum of two obtuse angles would always begreater than 180∘.
Hence, a triangle can have only one obtuse angle.
Explanation:-
Answer: Option B. -> Lines having a uniform distance between them and never meet each other.:
B
Parallel lines are lines having a uniform distance between them (equidistant) and this distance is constant throughout and never meet each other.
Explanation:-
Answer: Option D. -> Reflex angle:
D
A Straight angle = 180∘
An Acute angle is less than90∘
An obtuse angle is more than 90∘but less than180∘
A Right angle = 90∘
Reflex angle is the only angle which is greater than 180∘ and less than 360∘