×

# Angle Classification

Angles can be grouped into three classes:

• Acute: angles with measure $$< 90^\circ$$.
• Right: angles with measure $$= 90^\circ$$.
• Obtuse: angles with measure $$> 90^\circ$$.
• Straight: angles with measure $$= 180^\circ$$.

Note by Arron Kau
3 years, 5 months ago

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold
- bulleted- list
• bulleted
• list
1. numbered2. list
1. numbered
2. list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1paragraph 2

paragraph 1

paragraph 2

[example link](https://brilliant.org)example link
> This is a quote
This is a quote
    # I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
# I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
MathAppears as
Remember to wrap math in $$...$$ or $...$ to ensure proper formatting.
2 \times 3 $$2 \times 3$$
2^{34} $$2^{34}$$
a_{i-1} $$a_{i-1}$$
\frac{2}{3} $$\frac{2}{3}$$
\sqrt{2} $$\sqrt{2}$$
\sum_{i=1}^3 $$\sum_{i=1}^3$$
\sin \theta $$\sin \theta$$
\boxed{123} $$\boxed{123}$$

Sort by:

I prefer it this way:

$0^\circ<\text{acute angles}<90^\circ$

$90^\circ<\text{obtuse angles}<180^\circ$.

Also there is a practice question about straight angles, but you don't have anything about it here.

- 3 years, 4 months ago