This math topic focuses on identifying the types of angles: acute, obtuse, right, and straight. It allows students to practice recognizing angles by their degree measurements — acute being less than 90 degrees, obtuse greater than 90 degrees, right exactly 90 degrees, and straight exactly 180 degrees. Questions on the topic present images of different angles and ask students to classify them accordingly, providing options to select whether the given descriptions match the angles shown.
Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
Practice:
Is Angle Acute, Obtuse, Right, or Straight (one option)
Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.
Is the following angle 'Right' (equal to 90º)
Is Angle Acute, Obtuse, Right, or Straight (one option) Worksheet
| Math worksheet on 'Is Angle Acute, Obtuse, Right, or Straight (one option) (Level 2)'. Part of a broader unit on 'Geometry - Angle Basics' Learn online: app.mobius.academy/math/units/geometry_angle_basics/ |
1
| Is the following angle 'Straight' (equal to 180º) |
a
| Is not a Straight angle |
b
| Is a Straight angle |
2
| Is the following angle 'Obtuse' (greater than 90º) |
a
| Is an Obtuse angle |
b
| Is not an Obtuse angle |
3
| Is the following angle 'Right' (equal to 90º) |
a
| Is a Right angle |
b
| Is not a Right angle |
4
| Is the following angle 'Obtuse' (greater than 90º) |
a
| Is not an Obtuse angle |
b
| Is an Obtuse angle |
5
| Is the following angle 'Straight' (equal to 180º) |
a
| Is not a Straight angle |
b
| Is a Straight angle |
6
| Is the following angle 'Right' (equal to 90º) |
a
| Is not a Right angle |
b
| Is a Right angle |
7
| Is the following angle 'Obtuse' (greater than 90º) |
a
| Is not an Obtuse angle |
b
| Is an Obtuse angle |