Because the triangle is isosceles, the base angles are equal, making the math straightforward. You calculate the remaining degrees by performing 180 minus 108, which equals 72.
Test Your Skills: Find Base Angles of Isosceles Triangles
You set up the equation x + x + (x + 20) = 180. To find these angles, you first identify the vertex angle, which is the angle between the two equal sides.
Identifying the Base Correctly A common point of confusion is determining which side is the base. Working with Missing Angles Sometimes the vertex angle is not given, but the base angles are expressed as variables.
Test Your Skills: Find Base Angles of Isosceles Triangles
The base is the unequal side, and the angles adjacent to it are the base angles. Consequently, the base angles are roughly 53.
More About How to find the base angles of an isosceles triangle
Looking at How to find the base angles of an isosceles triangle from another angle can help expand the discussion and give readers a second clear paragraph under the same section.
More perspective on How to find the base angles of an isosceles triangle can make the topic easier to follow by connecting earlier points with a few simple takeaways.
