Mathematics, 11.10.2019 15:50 teacherpreacher

If triangle def has a 90° angle at vertex e, which statements are true? check all that apply.

triangle def is an obtuse triangle.
the angle at vertex d is acute.
the angle at vertex f is obtuse.
triangle def is a right triangle.
the angle at vertex d is obtuse

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If triangle def has a 90° angle at vertex e, which statements are true? check all that apply.
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