Question

which names describe this triangle? choose yes or no for each name.
acute
right
obtuse
equilateral
isosceles
scalene
yes no

Explanation:

Step1: Analyze angle type

The triangle has one angle greater than $90^\circ$, so it is obtuse, not acute or right.

Step2: Analyze side lengths

The triangle has two sides of equal length, so it is isosceles, not equilateral or scalene.

Answer:

• acute: No
• right: No
• obtuse: Yes
• equilateral: No
• isosceles: Yes
• scalene: No