This math topic focuses on classifying triangles based on their angles. Specifically, it explores three types of triangles: acute (all angles less than 90 degrees), right (one right angle), and obtuse (one angle more than 90 degrees). The problems provide illustrations of triangles and challenge learners to identify the type of triangle depicted. Through this, students strengthen their understanding of triangle geometry and angle measurements.
Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
Practice:
Triangle Classification - Angles
Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.
Name the type of triangle based on its angles: Acute = all angles less than 90°, Right = one right angle, Obtuse = one angle more than 90°
Triangle Classification - Angles Worksheet
| Math worksheet on 'Triangle Classification - Angles (Level 1)'. Part of a broader unit on 'Geometry - Triangle Classification - Practice' Learn online: app.mobius.academy/math/units/geometry_shapes_triangles_classifying_practice/ |
| Name the type of triangle based on its angles: Acute = all angles less than 90°, Right = one right angle, Obtuse = one angle more than 90° |
| acute triangle |
| obtuse triangle |
| right triangle |
| Name the type of triangle based on its angles: Acute = all angles less than 90°, Right = one right angle, Obtuse = one angle more than 90° |
| acute triangle |
| obtuse triangle |
| right triangle |
| Name the type of triangle based on its angles: Acute = all angles less than 90°, Right = one right angle, Obtuse = one angle more than 90° |
| acute triangle |
| obtuse triangle |
| right triangle |
| Name the type of triangle based on its angles: Acute = all angles less than 90°, Right = one right angle, Obtuse = one angle more than 90° |
| obtuse triangle |
| acute triangle |
| right triangle |
| Name the type of triangle based on its angles: Acute = all angles less than 90°, Right = one right angle, Obtuse = one angle more than 90° |
| right triangle |
| obtuse triangle |
| acute triangle |
| Name the type of triangle based on its angles: Acute = all angles less than 90°, Right = one right angle, Obtuse = one angle more than 90° |
| right triangle |
| acute triangle |
| obtuse triangle |
| Name the type of triangle based on its angles: Acute = all angles less than 90°, Right = one right angle, Obtuse = one angle more than 90° |
| obtuse triangle |
| right triangle |
| acute triangle |