Question

In a triangle, the measure of
two angles are 70 degree and
45 degree. Therefore, the value
of the third angle is.
65 degree
55 degree
O 45 degree
O 75 degree​

Answer 1

Answer:

x=75+45=180

×=120=180

therefore x=180-120

=60 degree

Answer 2

Answer:

The measure of first angle of a triangle =70 degree.

The measure of second angle of a triangle =45 degree.

The measure of Third angle of a triangle =?

70

NOW,

Let the Third angle be =x

Sum of all angle of a triangle =180 degree.

70 degree +45 degree +x =180degree.

115degree+x=180 degree.

x=180degree-115 degree.

=65 degree.

65 degree is the right answer.