Question 13 (iv) If two adjacent angles are supplementary, they form a ___
Linear pair
Question 13 (ii) If two angles are supplementary, then the sum of their measures is ___.
Fill in the blanks:
(i) If two angles are complementary, then the sum of their measures is _______.
(ii) If two angles are supplementary, then the sum of their measures is _______.
(iii) Two angles forming a linear pair are _______.
(iv) If two adjacent angles are supplementary, they form a _______.
(v) If two lines intersect at a point, then the vertically opposite angles are always _______.
(vi) If two lines intersect at a point, and if one pair of vertically opposite angles are acute angles, then the other pair of vertically opposite angles are _______.
Question 2
ΔDEF in the given figure is a right-angled triangle with ∠E=90∘. What type of angles are ∠D and ∠F?
a) They are equal angles b) They form a pair of adjacent angles c) They are complementary angles d) They are supplementary angles
Consider the following statements: When two straight lines intersect: (i) adjacent angles are complementary (ii) adjacent angles are supplementary (iii) opposite angles are equal (iv) opposite angles are supplementary
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?