For questions 1 and 2 options, A and D are correct respectively.
<h3>What is the triangle?</h3><h3 />
A triangle is a three-sided polygon. It is one of the most fundamental geometric forms.
1. In ∆ABC,
a=10 cm, b=18 cm, c=∠105°
For the given data only one triangle is formed. Option A is correct.
2. In ∆ABC, if <A is obtuse and a<c,
An obtuse angle is an angle more than the 90°.The given condition is wrong. None of the triangle is formed from the given options.
Hence for questions 1 and 2 options A and D are correct respectively.
To learn more about the triangle, refer to:
brainly.com/question/2773823
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