# does a triangle have a right angle?

### 17 Answers

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• 8 months ago

Only if it's a right triangle.

• geezer
Lv 7
8 months ago

Only a right angled triangle has a right angle.

Two thumbs down !

• 8 months ago

There are four types of triangle;

1. Right- angled - where one angle is 90o.

2. Equilateral - where the three angles are all the same value - 60o.

3. Isosceles - Where two sidesand two angles are equal.

4. Scalene - Where all three angles and all three sides are different.

• 8 months ago

Not all of them

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• 8 months ago

Some triangles have a right angle but not all triangles have it.

• 8 months ago

A right angle is 90 degrees so if a triangle has an angle of 90 degrees in it, then its a right angled triangle.

• Anonymous
8 months ago

Only a right angled triangle does

• 8 months ago

Not necessarily. Acute scalene/isosceles, obtuse scalene/isosceles, and equilateral triangles...pick your poison. Plenty of counterexamples.

• Anonymous
8 months ago

If the sum of the three angles of the triangle add up to 180 degrees then each of the angles is correct or "right"

• D g
Lv 7
8 months agoReport

I notice you didnt have the guts to show your identity with that STUPID answer

• Not
Lv 4
8 months ago

only if the sum of two other angles are 90°

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