Question

In triangle PQR if P is angle 60° and Qis 40° then the exterior angle formed by producing QR is equal to​

Answer 1

According to the laws, the sum of interior opposite angles is equal to the exterior angle . Here we have angle P= 60 degree and angle Q = 40 degree so the sum will be 100 degree which is the exterior angle

Answer 2

Answer:

Step-by-step explanation:

In triangle PQR-

AngleP + AngleQ + AngleR = 180* [Angle sum property of a triangle]

60*+40*+Angle2 = 180*

Angle2 = 180*-100*

Angle2 = 80*

Also Angle2 + Angle1 = 180* [Linear pair]

80* + Angle1 = 180*

Angle1 = 180* - 100*

Angle1 = 100*

See attachment to clear the figure and any remaining doubts...

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