What is the greatest common factor of 68 and 34

Pls super important solve the botton one

Which property is illustrated by the following statement? if hxa rgi, then rgi hxa.

Brent needs to paint a logo made using two right triangles. the dimensions of the logo are shown below. what is the difference between the area of the large triangle and the area of the small triangle? (1 point) select one: a. 4.5 cm2 b. 8.5 cm2 c. 16.5 cm2 d. 33.0 cm2