Properties of Triangles
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   High School Geometry
High School Geometry
Math

 

(pre-made sample)
Name _____________________________
Date ___________________
(Key 1 - Answer ID # 0582421)
1.  

Which of the following statements is NOT correct?

The shortest distance from a vertex to the opposite side is the altitude to that side.

In an isosceles triangle, the altitude to the base bisects the base and the vertex angle.

An equilateral triangle is also an equiangular triangle.

The circumcenter of a triangle is always inside the triangle.

2.  

In ABC, is the perpendicular bisector of and D lies on . Which statement(s) must be true?
(I) ABD ACD
(II) ABC is equilateral.
(III) is the bisector of BAC.

I, II, and III

I only

II only

III only

I and III only

3.  

If kn, ABC is an isosceles, m1 = 3x and m2 = (75 -x), find the measure of mBAC.




4.  

and bisect ADE and CED respectively. If mCED = 115 and mDFE = 67, find mABF.




5.  

You want to prove that the perpendicular bisector of the base of an isosceles triangle is also the angle bisector of the vertex. Which postulate can NOT be used in your proof?

SAS

HL

SSA

SSS

6.  

X is a point inside triangle ABC. If X is equidistant from and , then X must lie on the ______.

altitude to side

median of C

bisector of C

perpendicular bisector of




Properties of Triangles
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   High School Geometry
High School Geometry
Math