Question

(8) The measures of two angles of a triangle are 60° and 40°, find the
measure of the third angle.
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Answer 1

60 add 40 is equal to 100

the third angle is 100 degree

Answer 2

Let the third angle be x .

we know that the sum of interior angles of a triangle is 180 .

60+40+x=180

100+x =180

x =180-100

x =80

Hence, the third angle is 80.