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Classify an angle of 95

Step by step, with the reason for every step · Classifying angles and triangles · Geometry

Step by step

The question

Question: find what kind of angle 95° is.

1 Compare with 90° and 180°

There are five kinds of angles.

Each name says how big the angle is, next to 90° and 180°.

95 is more than 90, but less than 180.

90 < 95 < 180

Careful!

Obtuse is bigger than a square corner, but smaller than a straight line.

Careful: obtuse: between 90° and 180°

2 Name it

So 95° is obtuse.

95° is obtuse

3 Check

Let's check with the picture.

The dashed line up makes a square corner: 90°.

The dashed line to the left makes a straight line: 180°.

Our angle opens wider than the square corner, but not as far as the straight line.

So it is obtuse.

Let's look back.

First: compare with 90° and 180°.

Then: name it.

Last: check.

Answer
95° is obtuse

Your turn

Try this one yourself, then check:

What kind of angle?
Show the answer
obtuse

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