Find the missing angle measure. Then classify the triangle by its angles.
A right triangle with angles x degrees and 65 degrees.
A. 25º, right
B. 25º, acute
C. 65º, right
D. 65º, acute
To find the missing angle measure, we can use the fact that the sum of the angles in a triangle is always 180 degrees. Since we know that one angle is 90 degrees (it's a right triangle), and another angle is 65 degrees, we can set up an equation:
x + 90 + 65 = 180
Simplifying this equation, we get:
x + 155 = 180
Subtracting 155 from both sides, we get:
x = 25
So the missing angle measure is 25 degrees.
Since one angle is 90 degrees, this triangle is a right triangle. And since one angle is acute (less than 90 degrees) and the other angle is a right angle, we can classify this triangle as a right triangle with one acute angle.
Therefore, the answer is A. 25º, right.