Question

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Answer 1

Answer:100°

Step-by-step explanation:in the attachment

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Answer 2

If two sides of a triangle are equal then it is an isosceles triangle.

Since PQ = PR ⇒ △PQR is an isosceles triangle.

Theorem: In a triangle, sides opposite to equal angles are also equal.

⇒ ∠Q=∠R

We know that sum of all the three angles in a triangle is 180o.

It is given that non-equal angle in the △PQR is, ∠P =36o

⇒ ∠Q=∠R=72o

Theorem: In a triangle, the side opposite to the largest angle is the largest.

The largest angles in △PQR are PQ and PR since they are opposite to the largest angles ∠R and ∠Q respectively.

⇒ PQ and PR are the largest sides of the △PQR.