Angle facts Quiz
10 questions · easy to harder · Geometry · score and step-by-step answers
How it works
- 10 questions, about 20 minutes (a timer counts down; you can hide it). Solve it right here: no sign-up.
- 4 questions have choices. For the others you type the answer: a number like 4, −2, 7/2 or 3.5, or for example x = 4, x = 2 or x = −3, (3, 5), 2x + 1. Use ^ for powers (x^2) and sqrt for √. Any form with the same value counts (7/2 = 3.5).
- One question at a time: Back, Next, Mark for review and the question list at the bottom. A calculator is on the screen.
- At the end: your percent and grade, every question right or wrong, why a wrong choice is wrong, and its step-by-step solution. Then practise the lesson with new questions.
Your answers and results are kept in this browser only, so you can close the page and come back.
1 Question 1
Angles on a line 130 and x. Find x.Type the answer.
2 Question 2
Angles around a point 90, 120, x. Find x.Type the answer.
3 Question 3
Angles in a triangle 50, 60, x. Find x.- A) x = 180
- B) x = 70
- C) x = 110
4 Question 4
Angles in a triangle 45, 45, x. Find x.Type the answer.
5 Question 5
Angles on a line 40, 60, x. Find x.- A) x = 80
- B) x = 100
- C) x = 180
6 Question 6
Angles on a line 3x and 2x. Find x.Type the answer.
7 Question 7
Vertical angles 5x − 15 and 85. Find x.- A) x = 5
- B) x = 100
- C) x = 20
- D) x = 85
8 Question 8
Angles in a triangle x, x, 40. Find x.Type the answer.
9 Question 9
Angles around a point 3x, 4x, 5x, 6x. Find x.- A) x = 109
- B) x = 20
- C) x = 360
10 Question 10
Angles on a line 5x − 10 and 3x + 30. Find x.Type the answer.