MathGeometry & Trigonometry
Practice
Lines, Angles and Triangles Practice
Original questions applying angle relationships, similarity, and triangle properties.
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Question 1 of 2
Question 1
Medium
Correct answer\(115^\circ\)
Explanation
An exterior angle equals the sum of the two remote interior angles: \(47+68=115\).
Question 2 of 2
Question 2
Hard
Correct answer\(25\)
Explanation
The scale factor from \(ABC\) to \(DEF\) is \(15/6=2.5\). Since \(BC\) corresponds to \(EF\), \(EF=10(2.5)=25\).
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Questions to review
No mistakes this time. Excellent work.
- Question 1Apply the exterior-angle theoremMedium
- Question 2Use similarity to find a side lengthHard