Question

One angles of an isosceles trangle is 90°. What are the other two angles?

Answer 1

Answer:

x = 45°

Step-by-step explanation:

We know that in an isosceles triangle, 2 sides are equal.

∴ Even their base angles will be equal.

The vertex angle = 90°

Let the unknown angle be x.

x + x + 90° = 180° [Sum  of angles of a triangle = 180°]

2x + 90° = 180°

2x = 180 - 90

2x = 90°

∴ x = $\frac{90}{2}$

  x = 45°

Answer 2

Answer:

the other two angle of isosceles triangle is 45°.

by Angle sum property of ∆= / A +/ B +/ C =180°

Angle sum property of ∆= 90° +/ B +/ C =180°

/ B +/ C = 180° - 90°

2/ B and C = 90°

/ B = 90°

2

/ B= / C = 45° .

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