Question

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?

Answer 1

Mark Brainliest please


See the image for the drawing
Let’s say the side BC is extended till D

1) measure of angle ACD = 105° ( angle ACD is exterior angle)
45 + 60 = 105
2) I found the answer by adding the values of Angle A and Angle 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.