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Complementary & Supplementary Angles Calculator

QUICK LINKS

STUDENT
TEACHER

Complementary & Supplementary Angles Calculator

Complementary and Supplementary Angles

CALCULATOR
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Complementary & Supplementary Angles Calculator

Are the two angles complementary or supplementary?
No sweat! We can help you figure it out 🦸🏽‍♀️. How many of the two angles do you know?

Step 1. Determine the total angle measure.

Step 2. Find the value of the unknown angle.

If we know the measure of one of the two angles, we can use it to find the value of the missing angle.
What is the value of your given angle?
So, the value of the missing angle is .
We have some questions for you! Help us out through this
INTRO
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Complementary and supplementary angles are special pairs of angles 👯‍♀️.
Complementary angles are two angles that combine to form a corner.
Supplementary angles are two angles that combine to form a straight line.
Check out our
Calculator
or explore our
Lesson
and
Practice
sections to learn more about how to find the area of triangles and test your understanding.

You can also use the Quick Links menu on the left to jump to a section of your choice.

You can also use the Quick Links dropdown above to jump to a section of your choice.

KEY STEPS
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How to Find Complementary & Supplementary Angles

Show steps for angles that are:

Step 1. Determine the total angle measure.

If the two angles are complementary or form a corner (right angle), then the total angle measure is .

Step 2. Find the value of the unknown angle.

If we know the measure of one of the two angles, we can use it to find the value of the missing angle.

Step 1. Determine the total angle measure.

If the two angles are supplementary or form a straight line, then the total angle measure is .

Step 2. Find the value of the unknown angle.

If we know the measure of one of the two angles, we can use it to find the value of the missing angle.
LESSON
— Complementary and Supplementary Angles
PRACTICE
— Complementary and Supplementary Angles
CONCLUSION
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