90o angle is called _______
Right angle
Straight angle
0
180o
Two angles are complementary if their sum is ________.
180
360
90
Calculate ∠a, ∠b and ∠c
50, 60, 70
40, 90, 100
50, 360, 90
40, 140, 40
Find x
85o
60o
30o
20o
A straight angle = ________o
120o
130o
If a + b = 180o then a and b are
Supplementary angles
Linear pare
The sum of the total angles in a triangle is _______
80o
90o
None of these
Give reasons x = y ____________
Conjoined angles
Corresponding angles
Alternate angles
If a straight line cuts two other straight lines so that two alternate angles are equal than the two straight lines are ________
Parallel
Perpendicular
Equal
An current
The figure,given below,show a pair of parallel lines cut by a transversal.Find 'a' and 'b' ?
a = 110o b = 70o
a = 75o b = 75o
a = 60o b = 30o
a = 60o b = 65o