| ALPHA : Trigonometry : Angles 04 : Interior Angles Of A Triangle : ALPHA Maths Homework Exercise
Description : Interior angles of a triangle.
Discussion : The interior angles of a triangle add to 180 degrees. The exterior angle equals the sum of the opposite interior angles. An isoceles triangle has two equal sides. See figure Angles In Triangles And On Parallel Lines
The homework exercise has 4 questions.
internal angle
exterior angle
opposite interior angle
isoceles triangle
The equations are :
A + B + C = 180
CX = A + B
for isoceles triangle A = B
where
A B C = interior angles of triangle
CX = exterior angle of apex C
Back To Top
|