Function Right Angle

Angle ABC is a right angle. The square on point B indicates that the angle formed at B is a right angle.

Format:

∠ABC is a right angle

Input:

Output:

Details:

Conditional properties that reference this function:

• if AB ⊥ BC, then ∠ABC is a right angle (link)
• if ∠ABC is a right angle, then AB ⊥ BC (link)
• if ∠ABC is a right angle, then △ABC is a right triangle (link)
• if △ABC is a right triangle, then ∠ABC is a right angle (link)
• if ∠ABC is a right angle, then m∠ABC = 90 (link)
• if m∠ABC = 90, then ∠ABC is a right angle (link)
• if (AB || CD) and (∠ABD is a right angle), then ∠BDC is a right angle (link)
• if ABCD is a rectangle, then ∠ABC is a right angle (link)
• if (ABCD is a parallelogram) and (∠ABC is a right angle), then ABCD is a rectangle (link)
• if (ABCD is a parallelogram) and (∠CDA is a right angle), then ABCD is a rectangle (link)
• if ∠ABC is a right angle, then tangent of (m∠BCA) = (distance AB) / (distance BC) (link)
• if ∠ABC is a right angle, then sine of (m∠BCA) = (distance AB) / (distance AC) (link)
• if ∠ABC is a right angle, then cosine of (m∠BCA) = (distance BC) / (distance AC) (link)

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