What is the angle formed between north and south direction?
Acute angle
Straight angle
Right angle
Obtuse angle
We can observe from the above given image that North and south lies in a straight line.
So angle between north and south is 180∘ (straight angle).
Describe the given set E={acute angle, obtuse angle, right angle} ?
Describe the given set F=acutetriangle,obtuseangle,rightangle ?
Answer the following questions and justify.(i) Can two acute angles he complement to each other?(ii) Can two obtuse angles be complement to each other?(iii) Can two right angles he complement to each other?(iv) Can two acute angles be supplementary?(v) Can two obtuse angles be supplementary?(vi) Can two right angles be supplementary?(vii) Can two adjacent angles be supplementary?(viii) Can two adjacent angles be complementary?(ix) Can two obtuse angles be adjacent angles?(x) Can an acute angle be adjacent to an obtuse angle?(xi) Can two acute angles form a linear pair?(xii) can two obtuse angles form a linear pair?(xiii) Can two right angles form a linear pair?
Classify the following into acute angle, obtuse angle, reflex angle, and right angle:
60°,120°,270°,210°,30,45°,150°,235°