Question

1. what is an isosceles triangle?

a) a triangle that has 3 congruent sides (same)
b) a triangle that has two congruent sides (same)
c) a triangle that has a different length for each side
d) none the above

Explanation:

An isosceles triangle is defined as a triangle with two congruent (equal - length) sides. Option (a) describes an equilateral triangle (three congruent sides). Option (c) describes a scalene triangle (all sides of different lengths).

Answer:

B. A triangle that has two congruent sides (same)