question

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

answer

The angle at vertex D is acute.
Triangle DEF is a right triangle.

question

Triangle QRS is a right triangle with the right angle of vertex R. The sum of m

answer

c. equal to 90°

question

Which inequality can be used to explain why these three segments cannot be used to construct a triangle?

answer

b. AC + CB < AB

question

Triangle ABC is an obtuse triangle with the obtuse angle at vertex B. Angle A must be

answer

a. less than 90°

question

E D F
Which statements about the diagram are true? Check all that apply.

answer

DE + EF > DF
5 < DF < 13
△DEF is a scalene triangle.

question

Which are the possible side lengths of a triangle?

answer

b. 4 cm, 8 cm, 10 cm

question

In triangle XYZ, m m

answer

d. m

question

Iliana claims that she can construct a triangle from a 12-inch rod, a 36-inch rod, and a 39.4-inch rod. Which statement explains whether she is correct?

answer

c. Iliana will be able to construct a triangle because the sum of any two sides is greater than the third side.

question

DE EF DF
Which inequality explains why these three segments cannot be used to construct a triangle?

answer

b. ED + EF < DF

question

Triangle QRS has the angle measures shown.
m

answer

108

question

A B C (12, 15, x)
The value of x must be greater than

answer

3

question

(Fiona's schools has three hallways that make up three sides)
What are the possible lengths of the third hallway that she did not walk through?

answer

d. between 30 yards and 150 yards

question

Steven is cutting an 11ft piece of lumber into three pieces to build a triangular garden. Which diagram shows a way in which he can cut the wood to create three pieces that can form a triangle?

answer

d. 3ft | 4ft | 4ft