Assertion: right triangle's angle | /r/HasProperty | the same
Facets:
value: in both triangles
type: LOCATION
Source sentences:
text: The new triangle ACH is similar to triangle ABC, because they both have a right angle (by definition of the altitude), and they share the angle at A, meaning that the third angle will be the same in both triangles as well, marked as θ in the figure.
text: Radius (r) feet yards inches miles meters kilometers centimeters Angle (A) degree ° radian
text: The other angle - the one where the two sides are mutually perpendicular - is 90°.
text: If two angles are the same and unknown, subtract the known angle from 180° and then divide by 2.