
Question 1:
The angles between North and West and South and East are:
(a) complementary (b) Supplementary
(c) both are acute (d) both are obtuse
Question 2:
Angles between South and West and South and East are
(a) Vertically opposite angles
(b) complementary angles
(c) Making a linear pair
(d) adjacent but not supplementary
Question 3:
In the given fig., PQ is a mirror, AB is the incident ray and BC is the reflected ray. If ∠ ABC = 460. Find ∠
ABP is equal to
Question 4:
In the figure, lines PQ and ST intersect at O. If ∠POR = 90° and x : y = 3 : 2, then find the value of z.
Question 5:
3a + 16 and 2a + 34 are supplementary angles. Find a.
Question 6:
In the figure, PQ||ST. Find the value of x + 2y.
Question 7:
In the given figure, find the value of x.
Question 8:
In the given fig., if AB ||CD ∠ APQ = 500 and ∠
PRD =1300, find ∠
QPR.
Question 9:
In the given fig., lines l and m intersect each other at a point. Which of the following is false.
(a) ∠ a = ∠ b (b) ∠ d = ∠ c
(c) ∠ a + ∠ d = 1800 (d) ∠ a = ∠ d
Question 10:
If the complement of an angle is 620, find its supplement.
Question 11:
In the given figure, two parallel line l and m are cut by two transversal n and p. Find the values of x and y.
Question 12:
Find the value of x.
Question 13:
In the given figure, three lines AB, CD and EF intersect each other at O. If ∠ AOE = 300 and∠
DOB = 400 Find ∠
COF.
Question 14:
In the given figure, OB is perpendicular to OA and ∠ BOC = 490. Find ∠
AOD
Question 15:
State ‘True’ or ‘False’:
(1) Two right angles are complementary to each other.
(2) One obtuse angle and one acute angle can make a pair of complementary angles.
(3) Two supplementary angles are always obtuse angles.
Question 16:
Fill in the blanks:
(1) Two angles forming a _____ pair are supplementary.
(2) Two lines in a plane which do not meet at a point anywhere are called _____ lines.
(3) Sum of interior angles at the same side of transversal is _____.
Question 17:
What is the type of other angle of a linear pair if
(a) one of its angles is acute?
(b) one of its angles is obtuse?
(c) one of its angles is right?
Question 18:
In the given figure, PQ || ST, find the value of x + y.
Question 19:
In the given figure, identify:
(i) Five pairs of adjacent angles.
(ii) Three linear pairs.
(iii) Two pairs of vertically opposite angles.
Question 20:
Answer the following:
1. Can two adjacent angles be supplementary?
2. Can two adjacent angles be complementary?
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