Triangles are classified by their angles (acute, right, obtuse) and sides (equilateral, isosceles, scalene).
Grade 4Common Core 4.G.A.2GVerified correct ✓
Worked examples
A triangle has angles measuring 92°, 36°, and the third angle. (a) Find the measure of the third angle. (Remember: angles in a triangle sum to 180°.) (b) Classify the triangle as acute, right, or obtuse based on its angles. Explain your classification.
Answer:
A triangle has angles measuring 61°, 51°, and the third angle. (a) Find the measure of the third angle. (Remember: angles in a triangle sum to 180°.) (b) Classify the triangle as acute, right, or obtuse based on its angles. Explain your classification.
Answer:
Every problem on Pounce is generated and checked by code — never a wrong answer key.
Master Classify Triangles by Angles
Code-verified problems at exactly the right level, explained the way your kid learns.