Isosceles Triangles Answers
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If triangle DEF has a 90° angle at vertex E, which statements are true? Select two options.
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.22
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must
l
less than 90°.g
greater than 90°.c
congruent to angle B.c
congruent to angle C.23
In triangle XYZ, m∠Z > m∠X + m∠Y. Which must be true about △XYZ?
A
m∠X + m∠Z < 90°B
m∠Y > 90°C
∠X and∠Y are complementaryD
m∠X + m∠Y < 90°24
Which statements about the diagram are true? Select three options.
A
D E + E F greater-than D F
B
is an isosceles triangle.
C
5 less-than D F less-than 13
D
D E + D F less-than E F
E
is a scalene triangle.25
3 connecting lines are shown. Line D F is horizontal. Line D E is about half the length of line D F. Line F E is about one-third of the length of line D F.
A
EF + FD > DEB
ED + EF < DFC
ED + EF > DFD
EF + FD < DEDid you find these answers helpful?
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