Answer:
I think its 20, hope this helps.
1)Opposite sides of a rhombus are have the same length.
2)Same thing as statement 1: Opposite sides of a rhombus have the same length.
3) The side AC is common to the two triangles ABC and CDA.
4)The two angles ABC and CDA are congruent by the SSS theorem of
congruent triangles
Yup 39 is the correct answer good job :-)
The information tells us that this triangle is an isosceles triangle meaning two sides and two angles are congruent. Also, this is not a right triangle as the only isosceles right triangle has a ratio of 1:1:2
Hope this helps!
