If triangle DEF has a 90° angle at vertex E, which statements are true? Check all that apply.

a. Triangle DEF is an obtuse triangle.

b. The angle at vertex D is acute.

c. The angle at vertex F is obtuse.

d. Triangle DEF is a right triangle.

e. The angle at vertex D is obtuse.

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15 September, 03:35

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Selina Harrell · Answer 1

c. The angle at vertex F is obtuse.

d. Triangle DEF is a right triangle.

e. The angle at vertex D is obtuse.

If triangle DEF has a 90° angle at vertex E, which statements are true? Check all that apply.a. Triangle DEF is an obtuse triangle.b. The angle at vertex D is acute.c. The angle at vertex F is obtuse.d. Triangle DEF is a right triangle.e. The angle at vertex D is obtuse.