An angle is a two-dimensional figure formed by two rays that meet at a common endpoint. Angles are classified according to their measure in degrees. A right angle is an angle whose measure is 90 degrees. Different types of angles can be used to satisfy certain conditions. In this article, we will discuss the different types of angles or angle pairs that can be used to satisfy each condition.

## Acute Angles

An acute angle is an angle whose measure is less than 90 degrees. If the condition requires an angle to be acute, then any angle whose measure is between 0 and 90 degrees can be used to satisfy it. For example, if the condition requires a measure of 40 degrees, then an angle with a measure of 40 degrees can be used.

## Obtuse Angles

An obtuse angle is an angle whose measure is greater than 90 degrees. If the condition requires an angle to be obtuse, then any angle whose measure is between 90 and 180 degrees can be used. For example, if the condition requires a measure of 120 degrees, then an angle with a measure of 120 degrees can be used.

## Right Angles

A right angle is an angle whose measure is 90 degrees. If the condition requires an angle to be a right angle, then an angle with a measure of 90 degrees can be used. This type of angle is often used in geometric shapes such as squares, rectangles, and triangles.

## Complementary Angles

Complementary angles are two angles whose measures add up to 90 degrees. If the condition requires two angles to be complementary, then two angles whose measures add up to 90 degrees can be used. For example, if the condition requires two angles whose measures are 45 degrees and 45 degrees, then two angles with those measures can be used.

## Supplementary Angles

Supplementary angles are two angles whose measures add up to 180 degrees. If the condition requires two angles to be supplementary, then two angles whose measures add up to 180 degrees can be used. For example, if the condition requires two angles whose measures are 90 degrees and 90 degrees, then two angles with those measures can be used.

In conclusion, different types of angles or angle pairs can be used to satisfy different conditions. Acute angles can be used to satisfy a condition that requires an angle with a measure of less than 90 degrees. Obtuse angles can be used to satisfy a condition that requires an angle with a measure of more than 90 degrees. Right angles can be used to satisfy a condition that requires an angle with a measure of exactly 90 degrees. Complementary angles can be used to satisfy a condition that requires two angles whose measures add up to 90 degrees. Finally, supplementary angles can be used to satisfy a condition that requires two angles whose measures add up to 180 degrees.