Calculate Angle ABC: Geometry Problem with 70°, 18°, and 20° Angles

What is the size of angle ABC?

AAABBBCCC701820

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Step-by-step video solution

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00:00 Find angle ABC
00:03 The entire angle equals the sum of its parts
00:07 Let's sum its parts and solve to find the angle
00:10 And this is the solution to the problem

Step-by-step written solution

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1

Understand the problem

What is the size of angle ABC?

AAABBBCCC701820

2

Step-by-step solution

In order to calculate the value of angle ABC, we will begin by calculating the sum of all the given angles.

That is:

ABC=70+20+18 ABC=70+20+18

ABC=108 ABC=108

3

Final Answer

108

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Indicates which angle is greater

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