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Earn +20 ptsQ: What shapes must contain a right angle?
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What must be true for an angle to be a right angle?
It has to be 90 degrees to be a right angle.
Is it true that an obtuse triangle can have a right angle?
In Euclidean geometry, a triangle must be one of these: acute, obtuse, or right. Maybe there is a non-Euclideangeometry for which some obtuse triangles can contain a right angle, but it doesn't happen in Euclidean geometry.
What must you construct before you trisect a right angle?
An equilateral triangle on on of the arms of the right angle.
Why not left angle triangle but right angle triangle?
Because the phrase 'right angle' indicates 90 degrees whereas there is no such angle as a 'left angle'
What kind of aNGLE DOES A RIGHT TRIANGLE HAVE?
A right-angle triangle must have one corner of 90 degrees.
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