RV bisects the Triangle SVU in two equal halves means, it cuts the triangle into two smaller triangles with equal area. Here, SR = RU Angle R is equal to itself. & V is already divided into two equal halves.
So, The two smaller angles would be Congruent by ASA Postulate.
The triangle is a right triangle because of the square. every triangle is 180 degrees so you take 180-90 which will equal 90. You have two angles left so divide 90 by two and you get 45. 45 is the missing angle and both are the same
Your sister should be 68 years old when you was four she was half your age so that mean that she was 2 years old so now that you are 70 she is 68 years old
