Draw scalene triangle ABC and extend side BC to the right of vertex C. 1. If angle A measures 45 degrees and angle B measures 60 degrees, what is the measure of the
exterior angle you drew?
2. Explain how you found the answer
3. What do you observe?

1) m∠ACD = 105°

⇒ 45 + 60 = 105

2) I found the answer by adding the values of ∠A and ∠B or by using the exterior angle property.

3) I observed that exterior angle property can be used here. Exterior angle property is that an exterior angle of a triangle is equal to the sum of the opposite interior angles.

Hope this answer helps u

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