Question

Origami is the Japanese art of folding paper. This ancient art relies on properties of Geometry to produce fascinating and beautiful shapes. For example, you can make a swan from a square piece of paper. The first figure in this illustration shows some of the creases for an origami swan that has been unfolded. ABCD is a square and DE bisects angle ADB and DF bisects angle BDC. Use these facts to classify triangle ABD by its side lengths and by its angle measures.

Answers;
A.acute triangle, congruent triangle
B.scalene triangle, obtuse triangle
C.isosceles triangle; right triangle
D.scalene triangle, acute triangle

Answer 1

I think since ABCD is square, all the angles equal 90 degrees. ABD is half the square, so it's logically a right triangle and that right there eliminates answers A B D

Answer 2

Thanks