Question

This is my question
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Answer 1

Answer:

45°

Step-by-step explanation:

given an isosceles right angle triangle

∴ base angles equal so here both the angles are x and the other one is 90

so,

x + x + 90 = 180 (ANGLE SUM PROPERTY)

2x = 180  -  90

2x = 90

x = 45

Answer 2

Answer:

x = 45°

Step-by-step explanation:

As we can see it is a right angled triangle with the two adjacent sides equal. This tells that apart from the right angle (90°), the rest two angles are same. (x)

Therefore , x + x + 90° = 180°

(Since, we know that sum of all angles of a triangle is 180°)

or 2x + 90° = 180°

or 2x = 180° - 90°

or 2x = 90°

or x = 90°/2

or x = 45°