Question

please i need a correct answer..... answer b....​

Answer 1

Answer:

ANS b) 70°

ans II) 5

Explanation:

ans B) measure of vertex angle= 40°

          sum of all angles in a triangle= 180°

          we know that,

          in isosceles triangle base angles are equal.

          let the base angles be x.

          measure of base angles⇒ x + x + 40° = 180°

                                                  ⇒2x + 40° = 180°

                                                  ⇒2x =180° -  40°

                                                  ⇒x= 140° / 2

                                                  ⇒x = 70°

∵ base angles are 70°, 70°

Answer 2

Explanation:

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