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Mathematics

Grade-8

Easy

Question

$text If end text angle a text is end text 68 degree text and end text angle b text is end text 37 degree comma text what is the measure of end text angle c ?$

112^o
75^o
143^o
149^o

hint Hint:

the sum of all the interior angles of a triangle is always 180

The correct answer is: 75^o

the sum of all the interior angles of a triangle is always 180
We know that;
angle a= 68 and angle b=37
angle a +angle b +angle c=180
68+37+angle c=180
angle c+105=180
angle c=180-105
angle c=75

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