Table of Contents

- 1 Can a right angle also be obtuse?
- 2 Why can’t a right triangle have an obtuse angle?
- 3 What is the difference between right acute and obtuse triangles?
- 4 Can an obtuse triangle and a right triangle be similar?
- 5 How many degrees is an obtuse angle?
- 6 What is the difference between acute and obtuse?
- 7 What is less than a right angle?

## Can a right angle also be obtuse?

A right triangle cannot be obtuse because of the sizes of the angles therein.

## Why can’t a right triangle have an obtuse angle?

When an angle of a triangle is 90 degrees, the triangle cannot have an obtuse angle. The other two must each be less than 90 degrees (90 deg + 89 deg + 1 deg = 180 deg). It therefore follows that they must both be less than 90 degrees and so must both be acute.

**What makes an angle right acute or obtuse?**

Acute Angle – An angle less than 90 degrees. Right Angle – An angle that is exactly 90 degrees. Obtuse Angle – An angle more than 90 degrees and less than 180 degrees. Straight Angle – An angle that is exactly 180 degrees.

### What is the difference between right acute and obtuse triangles?

A right triangle has one angle that’s 90° and a corner that looks like an L. Obtuse triangles have one angle that’s greater than 90°. In acute triangles, all the angles are less than 90°.

### Can an obtuse triangle and a right triangle be similar?

A triangle cannot be right-angled and obtuse angled at the same time. Since a right-angled triangle has one right angle, the other two angles are acute.

**Does two right angles make an obtuse angle?**

An obtuse angle is an angle that measures more than 90 degrees and less than 180 degrees.

#### How many degrees is an obtuse angle?

An obtuse angle refers to an angle that is more than 90 degrees but less than 180 degrees. These angles extend past a right angle. Learn more about obtuse angles here. It refers to any angle that is between a right angle and a straight angle. Moreover, obtuse angles are also called as blunt angles.

#### What is the difference between acute and obtuse?

Acute angle has a smaller measure than right one, while obtuse angle has a bigger measure than right one.

**Which shape has acute and obtuse angles?**

Acute and obtuse triangles. An acute triangle (or acute-angled triangle) is a triangle with three acute angles (less than 90°). An obtuse triangle (or obtuse-angled triangle) is a triangle with one obtuse angle (greater than 90°) and two acute angles.

## What is less than a right angle?

Half a full rotation is called a straight angle, and a quarter of a full rotation is called a right angle. An angle less than a right angle is called an acute angle, an angle greater than a right angle (but less than a straight angle) is called an obtuse angle, and an angle greater than a straight angle (but less than a full angle)…