What is the Triangle Sum Theorem?
Triangle Sum/Exterior Angle

Flashcard
•
Mathematics
•
9th Grade
•
Hard
Quizizz Content
FREE Resource
Student preview

15 questions
Show all answers
1.
FLASHCARD QUESTION
Front
Back
The Triangle Sum Theorem states that the sum of the interior angles of a triangle is always 180 degrees.
2.
FLASHCARD QUESTION
Front
If one angle of a triangle is 90 degrees, what type of triangle is it?
Back
It is a right triangle.
3.
FLASHCARD QUESTION
Front
What is the measure of the third angle in a triangle if the first two angles are 34 degrees and 101 degrees?
Back
45 degrees.
4.
FLASHCARD QUESTION
Front
What is the formula to find the measure of an exterior angle of a triangle?
Back
The exterior angle is equal to the sum of the two opposite interior angles.
5.
FLASHCARD QUESTION
Front
If two angles of a triangle are 30 degrees and 70 degrees, what is the measure of the third angle?
Back
80 degrees.
6.
FLASHCARD QUESTION
Front
What is the relationship between the angles in a triangle and its exterior angles?
Back
Each exterior angle is equal to the sum of the two non-adjacent interior angles.
7.
FLASHCARD QUESTION
Front
How do you find the value of x in a triangle when given two angles?
Back
Subtract the sum of the two angles from 180 degrees.
Create a free account and access millions of resources
Similar Resources on Quizizz
15 questions
Triangle Sum Theorem & Exterior Triangle Theorem

Flashcard
•
9th Grade
15 questions
Triangle Sum Theorem & Exterior Triangle Theorem

Flashcard
•
9th Grade
15 questions
Interior and Exterior Angles of Triangles

Flashcard
•
9th Grade
15 questions
Triangle Sum Theorem and Exterior Angle Theorem

Flashcard
•
9th Grade
15 questions
Interior angles in Polygons and Exterior angles of triangles

Flashcard
•
9th Grade
15 questions
Interior and Exterior Angles of Triangles

Flashcard
•
9th Grade
15 questions
Triangle Sum and Exterior Angle Theorems

Flashcard
•
9th Grade
15 questions
Triangle Sum Theorem

Flashcard
•
9th Grade
Popular Resources on Quizizz
15 questions
Multiplication Facts

Quiz
•
4th Grade
25 questions
SS Combined Advisory Quiz

Quiz
•
6th - 8th Grade
40 questions
Week 4 Student In Class Practice Set

Quiz
•
9th - 12th Grade
40 questions
SOL: ILE DNA Tech, Gen, Evol 2025

Quiz
•
9th - 12th Grade
20 questions
NC Universities (R2H)

Quiz
•
9th - 12th Grade
15 questions
June Review Quiz

Quiz
•
Professional Development
20 questions
Congruent and Similar Triangles

Quiz
•
8th Grade
25 questions
Triangle Inequalities

Quiz
•
10th - 12th Grade
Discover more resources for Mathematics
40 questions
Week 4 Student In Class Practice Set

Quiz
•
9th - 12th Grade
10 questions
Exponential Growth and Decay Word Problems

Quiz
•
9th Grade
45 questions
Week 3.5 Review: Set 1

Quiz
•
9th - 12th Grade
17 questions
High School Survival Guide

Lesson
•
9th - 12th Grade
15 questions
Factoring Quadratics

Quiz
•
9th Grade