Question

isosceles and equilateral triangles
all sides are equal and all angles are equal
find all sides and angles
△abc is equilateral and bd bisects ∠abc. find ∠1 and ∠2
if the vertex angle is 44°, what are the two base angles?

1. which is the most thorough meaning for bisector?

cuts into two equal parts
cuts in two parts
cuts

Explanation:

A bisector (angle or segment) is defined as a line that divides an angle or a segment into two equal parts. Among the options, "Cuts into two equal parts" accurately describes the meaning of a bisector, as it emphasizes the equality of the two resulting parts, which is a key characteristic of a bisector. "Cuts in two parts" is less precise as it doesn't mention the equality, and "Cuts" is too vague.

Answer:

Cuts into two equal parts