Classifying triangles by angles
Classifying triangles by angles.
- Use the stated properties and diagram markings, rather than judging by appearance.
- Matching ticks mean equal lengths; matching arrows mean parallel lines.
- A small square marks a right angle. Keep labels horizontal and include units.
Example 1
Classify the triangle by its angles.
Check the largest angle: below 90°, exactly 90°, or above 90°.
Example 2
Classify the triangle by its angles.
Check the largest angle: below 90°, exactly 90°, or above 90°.
Your turn
Classify the triangle by its angles.
Check answer
Check the largest angle: below 90°, exactly 90°, or above 90°.
Classify the triangle by its angles.
Check answer
Check the largest angle: below 90°, exactly 90°, or above 90°.
Classify the triangle by its angles.
Check answer
Check the largest angle: below 90°, exactly 90°, or above 90°.
Classify the triangle by its angles.
Check answer
Check the largest angle: below 90°, exactly 90°, or above 90°.
Classify the triangle by its angles.
Check answer
Check the largest angle: below 90°, exactly 90°, or above 90°.
Classify the triangle by its angles.
AnswerCheck the largest angle: below 90°, exactly 90°, or above 90°.
Classify the triangle by its angles.
AnswerCheck the largest angle: below 90°, exactly 90°, or above 90°.
Classify the triangle by its angles.
AnswerCheck the largest angle: below 90°, exactly 90°, or above 90°.
Classify the triangle by its angles.
AnswerCheck the largest angle: below 90°, exactly 90°, or above 90°.
Classify the triangle by its angles.
AnswerCheck the largest angle: below 90°, exactly 90°, or above 90°.