Question

Instructions: Use the image and your knowledge of the isosceles triangle to find the value of 2.

Answer 1

Answer:

Step-by-step explanation:

In isosceles triangle, the base angles (the angles opposite to equal sides) are equal.

∠A = ∠B = 72

72+ 72 + x = 180  {Angle sum property of triangle}

   144 + x = 180

            x = 180 - 144

           x = 36°

Answer 2

Answer:

x = 36˚

Step-by-step explanation:

• The 2 base angles in an isosceles triangle are equal
• Angles in a triangle sum to 180˚
• $x+72+72=180$
• $x+144=180$
• $x=180-144=36$