Question

2) Angle Sum Property of a Quadrilateral The sum of the four angles of a quadrilateral is 360° LA + 2B + C + D = 360° ​

Answer 1

Answer:

90∘

Step-by-step explanation:

Explanation:

An isosceles triangle has two sides of equal length. Likewise, the opposite angles of the sides are the same

So lets assume each angle be  x  and the bigger angle be  2x  

(since it is twice the base angle)

Now, we know that sum of the angles in a triangle is 180 degree

So,

→2x+x+x=180∘

→4x=180∘

→x=180  divided by 4

⇒x=45∘

Now the other angle is  2x  which is  45×2=90∘

Hope this helps!!! ☺☻ have a good day...