(02.04 HC) C is the circumcenter of isosceles triangle ABD…

(02.04 HC) C is the circumcenter of isosceles triangle ABD with vertex angle ∠ABD. Does the following proof correctly justify that triangles ABE and DBE are congruent? It is given that triangle ABD is an isosceles triangle, so segments AB and DB are congruent by the definition of isosceles triangle. It is given that C is the circumcenter of triangle ABD, making segment BE a median. By the definition of perpendicular, angles AEB and DEB are 90°, so triangles ABE and DEB are right triangles. Triangles ABE and DEB share side BE making it congruent to itself by the reflexive property. Triangles ABE and DBE are congruent by HL.

(02.01 HC) Triangle JOY is translated using the rule (x, y)…

(02.01 HC) Triangle JOY is translated using the rule (x, y) → (x + 3, y − 2) to create triangle J′O′Y′. If a line segment is drawn from point J to point J′ and from point O to point O′, which statement would best describe the line segments drawn in relation to one another?

(02.04 MC) Jeremiah is working on a model bridge. He needs…

(02.04 MC) Jeremiah is working on a model bridge. He needs to create triangular components, and he plans to use toothpicks. He finds three toothpicks of lengths 4 in., 5 in., and 1 in. Will he be able to create the triangular component with these toothpicks without modifying any of the lengths?