I'm not completely sure about this answer since it's been 2 months since I've done geometry but to find the measure of <ADC, it's half of the arc measure of arc AE. (48+68)/2=58 so the measure of <ADC is 58 degrees.
The measure of arc AE is 68 because it is the measure of <ABE doubled.
The question is asking to choose among the following statement is true about the triangle GHI if it is classified as a right triangle, base on the following choices, I would say that the answer would be letter A. At least two sides are congruent. I hope you are satisfied with my answer and feel free to ask for more
On expanded form is for example 139 in expanded form would be (100)+(30)+(9)and area model is the model for multiplication
The two column reason statement is 4 and 5