The theorem that allows us to say that the base angles of an isosceles triangle are congruent is the Base Angles Theorem. This theorem states that if a triangle is isosceles (meaning it has at least two congruent sides), then the angles opposite those sides (the base angles) are also congruent.
Problem 7) Which theorem allows us to say that the base angles of an isosceles triangle are congruent, as shown in the picture below?
Pythagorean Theorem
Pythagorean Theorem
Segment Addition Postulate
Segment Addition Postulate
Alternate Exterior Angles Theorem
Alternate Exterior Angles Theorem
Base Angles Theorem
1 answer