Incenter Practice

Incenter Practice

10th Grade

8 Qs

quiz-placeholder

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Incenter Practice

Incenter Practice

Assessment

Quiz

Mathematics

10th Grade

Practice Problem

Medium

CCSS
HSG.C.A.3, HSG.CO.C.10, HSG.CO.C.9

+1

Standards-aligned

Created by

Melissa Pfaltzgraff

Used 63+ times

FREE Resource

About this resource

This quiz focuses on the incenter of a triangle, a fundamental concept in high school geometry appropriate for grade 10 students. The questions assess students' understanding of the incenter as the intersection point of the three angle bisectors of a triangle, requiring knowledge of angle bisector properties and the unique characteristic that the incenter is equidistant from all three sides of the triangle. Students must demonstrate both conceptual understanding through definitions and visual recognition, as well as computational skills by applying the angle bisector theorem to solve for specific angle measures. The problems require students to distinguish between different triangle centers (incenter versus circumcenter), identify geometric constructions in diagrams, and use the relationship between angle bisectors and the angles they bisect to perform calculations involving angle measures. Created by Melissa Pfaltzgraff, a Mathematics teacher in US who teaches grade 10. This quiz serves as an excellent tool for introducing, practicing, or reviewing the properties of triangle incenters and can be effectively used as a warm-up activity, homework assignment, or formative assessment to gauge student understanding. The questions progress from basic definitions to more complex applications, making it ideal for checking comprehension after initial instruction or as review material before summative assessments. Teachers can use this quiz to identify students who may need additional support with angle bisector concepts or those ready for more advanced triangle center problems. The quiz aligns with geometry standards G.C.3 (construct inscribed and circumscribed circles of a triangle) and G.CO.12 (make formal geometric constructions), as students must understand the foundational concepts behind constructing incircles and working with angle bisectors in triangular figures.

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8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Define: INCENTER OF A TRIANGLE

the intersection point of the three angle bisectors of a triangle 
when three or more lines intersect at a single point 
the intersection point of the three perpendicular bisectors of a triangle 
the point of intersection of three or more lines 

Tags

CCSS.HSG.C.A.3

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Which of the images represents the Incenter of a Triangle

First
Second
Third

Tags

CCSS.HSG.C.A.3

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which point is equidistant from the sides?

Circumcenter
Incenter
Neither
Bilateral

Tags

CCSS.HSG.C.A.3

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The figure is an example of a(n) ...

angle bisector
perpendicular bisector
median
midsegment

Tags

CCSS.HSG.CO.C.10

CCSS.HSG.CO.C.9

CCSS.HSG.CO.D.12

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

If m∠CAP = 34° , find ∠CAB.

17°
34°
68°
90°

Tags

CCSS.HSG.C.A.3

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

HK and JK are angle bisectors of the triangle. Find the distance from K to side GJ.

50
16
21
not enough information

Tags

CCSS.HSG.C.A.3

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The incenter of a triangle is equidistant from the __________ of a triangle.

vertices
sides
angle bisector
circumcenter

Tags

CCSS.HSG.C.A.3

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