Question

help me out please.


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Answer 1

Step-by-step explanation:

2) no as the sum will be less than 180

3) no because the sum will be more than 180

4) 0, because sum is more than 180

45+64+72=181

181 is not 180

5)infinitely many similar triangles with same angles

53+63+64=180

As angle sum is 180 the triangle is possible

6)sorry I cannot see the figure

7)no, it is not necessary. I example if we make a 60° angle and bisect it, it is there will be two 30 ° angles. They are not 90

8)the rest of the angles are also 90. Answer in image