Question

Q1. The pair of supplementary angles are:- a) 133 º, 57 º b) 142 º, 48 º c) 68 º, 122 º d) 137 º,43º Q2. If a line is a transversal to three lines, how many points of intersections are there: a) 1 b) 2 c) 3 d) 4 Q3. If (y-25) º and (y +35) º from a linear pair, then the measure of angles are:- a) 20 º, 160 º b) 110 º , 70 º c) 60 º, 120 º d)150 º, 30 º Q4. If two lines intersect, then vertically opposite angles are a) equal b) complementary c) supplementary d) unequal





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Answer 1

Answer:

1 . d ) 137°,43° as their sum is 180°{137°+43°=180°}

2. c) 3

3. c) 120°,60°

y-25+y+35= 180

or, 2y+10=180

or, 2y=170

or, y=85

so, the angles are, (85-25)°=60°

and (85+35)=180°

4 . a) equal

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