Question

select which terms correctly describe the following triangle. select all that apply.

acute
equilateral
isosceles
obtuse
right

Explanation:

Analyze the angle markings

Using the Angle Classification knowledge point

$$ \text{All three interior angles are marked as acute (< 90}^\circ\text{).} $$

Classify by angles

Using the Triangle Classification knowledge point

$$ \text{Since all interior angles are acute, the triangle is acute.} $$

Analyze the side relationships

Using the Side Classification knowledge point

$$ \text{Two base angles have identical single-arc markings, meaning they are congruent.} $$

Classify by sides

Using the Triangle Classification and Side Classification knowledge points

$$ \text{Congruent base angles imply two congruent sides, making the triangle isosceles.} $$

Answer:

• acute (Correct answer)
• equilateral
• isosceles (Correct answer)
• obtuse
• right