Premises: if a triangle has an angle with a measure more than 90°, then the triangle is an obtuse triangle. the measure of an angle in △abc is 110°. conclusion: △abc is an obtuse triangle. is this law of syllogism or law of detachment?

we know that

Law of detachment is used when you have a conditional statement and another statement that matches the hypothesis of the conditional.

Law of syllogism is used when you have two conditionals and the hypothesis of one matches the conclusion of the other

in this problem we have the law of detachment

the conditional statement is

If a triangle has an angle with a measure more than 90°

the another statement that matches the hypothesis of the conditional

then the triangle is an obtuse triangle

therefore

the answer is

the law of detachment

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "