# Triangles Unit Test 92%

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question
Based on the diagram, which expresses all possible lengths of segment AB?
27 < AB < 81
question
Which angle is an adjacent interior angle to âˆ JKM?
âˆ MKL
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Triangle KNM is shown. What is true about the sides of KNM?
KN = NM
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If isosceles triangle ABC has a 130Â° angle at vertex B, which statement must be true?
mâˆ A + mâˆ B = 155Â°
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What is the mâˆ ABC?
mâˆ ABC = 60Â°
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Point H is the circumcenter of triangle DEF. Which must be true? Check all that apply.
Point H is the center of the circle that passes through points D, E, and F. HE = HD LH = NH
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Triangle XYZ is isosceles. Angle Y measures aÂ°. What expression represents the measure of angle X?
180 - 2a
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The lengths of the sides of triangle XYZ are in terms of the variable m, where m â‰¥ 6. Which is correct regarding the angles of the triangle?
mY < mZ < mX
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In the diagram, which must be true for point D to be an orthocenter?
BE âŠ¥ AC, AG âŠ¥ BC, and CF âŠ¥ AB.
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In triangle TRS, VZ = 6 inches. What is RZ?
12 inches
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Point Z is the incenter of Î”SRT. What is mZTB?
31Â°
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In the triangles, BC = DE and AC = FE. If the mC is greater than the mE, then AB is _________ DF.
longer than
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Triangle JKL is isosceles. The measure of angle J is 72Â° and the measure of angle K is 36Â°. Which statement describes angle L?
Angle L is a base angle and measures 72Â°.
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A regular pentagon is created using the bases of five congruent isosceles triangles, joined at a common vertex. The total number of degrees in the center is 360Â°. If all five vertex angles meeting at the center are congruent, what is the measure of a base angle of one of the triangles?
54Â°
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What is the value of x?
x = 22
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In which figure is point G a centroid?
A
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Point X is the circumcenter of Î”ABC. What is the length of XB?
5.3 cm
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Point Z is the circumcenter of Î”LMN. Which must be true?
ZBM = ZCM
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If triangle RST is an acute triangle, then mâˆ S must be
less than 90Â°.
question
Which statements regarding the diagram of Î”EBC are true? Check all that apply.
âˆ DEC is an exterior angle. âˆ ABE and âˆ EBC are supplementary angles. âˆ BEC is a remote interior angle to exterior âˆ BCF.
question
Chang knows one side of a triangle is 13 cm. Which set of two sides is possible for the lengths of the other two sides of this triangle?
8 cm and 8 cm
question
What is the length of segment NS?