Question

Are my answers correct! Geometry?
1) https://media.glynlyon.com/g_geo_2012/4/…

If T = 130°, find O=
......... 130?

2) https://media.glynlyon.com/g_geo_2012/4/…


Given:
R, S, T are midpoints of , , and .

If RS = 5, then AC =
.......10?

If the perimeter (distance around) of ABC is 20, then the perimeter of RST is
.........5 ?

3) https://media.glynlyon.com/g_geo_2012/4/page95c.gif

Given:
ABCD is a rectangle.
If AC = 10, then BD =
.....10?
If AC = 12, then BE =
......6?

Answer 1

please post one at a time

also the links aren't working for me