Question

Write the given
If one angle of a triangle is 90°, then the other two add to 90°.
Given:

Answer 1

angle B = 90°

Explanation:

Answer 2

For this case we have that the sum of the angles of a triangle is equal to 180 degrees.

We have then:

x + y + z = 180

Where,

x, y, z: angles of the triangle

If one of the angles is equal to 90 degrees, we have:

x + y + 90 = 180

Clearing we have:

x + y = 180 - 90\\x + y = 90

Answer:

if z = 90 then,

x + y = 90

:)))