Sum of Angles of a Triangle is 180°
- Author:
- Linda Fahlberg-Stojanovska
Animation that the sum of the interior angles of a triangle is 180°.
How did we choose the horizontal line about which B reflects?
How did we choose the vertical line about which A reflects?
How did we choose the vertical line about which C reflects?
How does this animation show that the sum of the interior angles of a triangle is 180°?