AB, BC and CD are three sides of a regular octagon. Find the size of angle BAC. Give reasons for your answer.

QAmmunity.org

My account
Edit my Profile
Private messages
My favorites

Ask a Question
Questions
Tags
Categories
Ask a Question

Muayyad Alsadi asked Feb 23, 2022

188,068 views

31 votes

AB, BC and CD are three sides of a regular octagon.

Find the size of angle BAC.
Give reasons for your answer.

AB, BC and CD are three sides of a regular octagon. Find the size of angle BAC. Give-example-1

Mathematics
high-school

Muayyad Alsadi asked Feb 23, 2022

by Muayyad Alsadi

2.5k points

0 Comments

Your comment on this question:

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

Your answer

Email me at this address if my answer is selected or commented on:Email me if my answer is selected or commented on

Privacy: Your email address will only be used for sending these notifications.

1 Answer

18 votes

Answer:

22.5°

Explanation:

The exterior angle at B is 360°/8 = 45°. The congruent interior angles of the triangle at A and C total this amount. The angle BAC is 45°/2 = 22.5°.

Buzzsaw answered Mar 1, 2022

by Buzzsaw

2.6k points

0 Comments

Your comment on this answer:

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

Ask a Question

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

1.6m questions

2.0m answers

0 Comments

Your comment on this question:

Your answer

1 Answer

0 Comments

Your comment on this answer:

Other Questions