Question

In an isosceles triangle, one angle is 90°. What will be the measure of its base angle?
Please answer fast. Answer will be marked as brainliest

Answer 1

Isosceles triangle is the triangle in which there will be 2equal angles.
A triangle has whole total 180 degree. So if one angle is 90degree then, the other 2angles sum will also be 90 degree. From the sum;we will get each angle in 45 degree.
Therefore the two angles are 45 degree each.

Answer 2

heya!
here's your answer!
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Given: isoceles triangle with one angle= 90°

To find: base angle

let both the equal angles be x° each .

therefore,
since sum of all angles of a triangle =180°

=> 90 + x + x = 180°

=> 90 + 2x = 180°

=> 2x = 90°

=> therefore , x = 90/2 = 45°

therefore each base angle = 45°

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Hope this helps you^^