During a friendly geometry competition, Jackson, Arjun, and Kai are trying to solve a problem involving an isosceles triangle. They found out that one of the base angles is 40 degrees. Can you help them figure out the measure of the third angle?
Isosceles Triangle

Quiz
•
Mathematics
•
9th - 12th Grade
•
Hard
Emerlina Binuya
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
100
120
80
60
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Arjun, Samuel, and Grace are playing a game where they have to find the measure of angles in an isosceles triangle. If one of the base angles in the triangle is 60 degrees, can you help them figure out the measure of each of the other two angles?
30
60
45
90
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Avery, Zoe, and Maya are trying to solve a puzzle involving an isosceles triangle. They found out that one of the base angles is 75 degrees. Can you help them figure out the measure of the third angle?
30
90
60
45
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Noah, Sophia, and Abigail are playing a game of 'Triangle Masters'. Noah draws an isosceles triangle and tells Sophia that one of the base angles is 45 degrees. Sophia, being the 'Triangle Master', needs to tell the measure of each of the other two angles. Can you help Sophia?
45
90
60
30
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kai, Liam, and Michael are building a giant isosceles triangle sandcastle at the beach. If one of the base angles they've made is 30 degrees, can you help them figure out the measure of the third angle?
45
60
120
90
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Aiden, Kai, and Mia are playing a game of 'Triangle Masters'. Aiden draws an isosceles triangle and tells Kai that one of the base angles is 80 degrees. If Kai has to guess the measure of each of the other two angles to win, what should his answer be?
60
80
40
100
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Charlotte and Aria are having a friendly competition to solve a geometry problem. They have an isosceles triangle with one of the base angles being 55 degrees. Liam, their friend, challenges them to find the measure of the third angle. Can you help them?
45
60
80
70
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