Sketch your triangle, draw in an altitude to see 2 congruent right-angled triangle
Look at one them.
It has a base of 1, a height of h and a hypotenuse of √2
So you recognize the triangle? You should know this one.
So what is the vertex angle?
An isosceles traingle has a base of length 2m sides and length of square root 2. Determine the exact value of the apex angle in radius.
1 answer