Classifying Triangles for 4th Grade
Triangles are classified two ways at once: by sides as equilateral, isosceles, or scalene, and by angles as acute, right, or obtuse. Every triangle gets one name from each list. The examples below cover every combination, with practice problems and answers.
DETAILED EXPLANATION
Triangles are classified by sides: scalene (no equal sides), isosceles (two equal sides), equilateral (three equal sides). By angles: acute, right, obtuse.
WORKED EXAMPLES WITH STEP BY STEP SOLUTIONS
Example 1
What do we call a triangle with three equal sides?
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Solutions:
Step 1: Apply the concept from the lesson above.
Step 2: Carry out the operation or reasoning.
Answer: An equilateral triangle.
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