Assertion: polygon's angle | /r/Synonym | the hypotenuse-leg hlpostulate
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Source sentences:
text: Where the angle is a right angle, also known as the Hypotenuse-Leg (HL) postulate or the Right-angle-Hypotenuse-Side (RHS) condition, the third side can be calculated using the Pythagorean Theorem thus allowing the SSS postulate to be applied.