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Properties of Triangles — Concept Test
Isosceles Triangle · Congruence of Right Triangles · Incenter · Circumcenter
Name
Date
Score
Questions
14
|
Format
Short Answer
|
✦ Write each concept as a complete sentence.
View Answer Key
A
Isosceles Triangle
1.
Write the
definition
of an isosceles triangle.
2.
Write
property ①
of an isosceles triangle.
3.
Write
property ②
of an isosceles triangle.
B
Congruence Conditions for Right Triangles
4.
Write congruence condition
① (RHA)
for right triangles.
5.
Write congruence condition
② (RHS)
for right triangles.
C
Incenter of a Triangle
6.
Write the
definition
of the incenter of a triangle.
7.
Write
property ①
of the incenter.
8.
Write
property ②
of the incenter.
9.
If I is the
incenter
of △ABC,
∠BIC
=
∠BIC
∠A
I
A
B
C
10.
If the inradius is
r
, (Area of △ABC) =
D
Circumcenter of a Triangle
11.
Write the
definition
of the circumcenter of a triangle.
12.
Write
property ①
of the circumcenter.
13.
Write
property ②
of the circumcenter.
14.
If O is the
circumcenter
of △ABC,
∠BOC
=
∠BOC
∠A
O
A
B
C