Isosceles Triangles
Flashcard
•
Mathematics
•
10th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an isosceles triangle?
Back
An isosceles triangle is a triangle that has at least two sides of equal length and the angles opposite those sides are also equal.
2.
FLASHCARD QUESTION
Front
What are the properties of an isosceles triangle?
Back
1. Two sides are equal in length. 2. The angles opposite the equal sides are equal. 3. The altitude from the vertex angle bisects the base.
3.
FLASHCARD QUESTION
Front
If the base angles of an isosceles triangle are both 40°, what is the measure of the vertex angle?
Back
100°
4.
FLASHCARD QUESTION
Front
In an isosceles triangle, if one base angle is 70°, what is the measure of the other base angle?
Back
70°
5.
FLASHCARD QUESTION
Front
What is the formula to find the vertex angle of an isosceles triangle given the base angles?
Back
Vertex angle = 180° - 2 * (base angle).
6.
FLASHCARD QUESTION
Front
How do you identify the base of an isosceles triangle?
Back
The base of an isosceles triangle is the side that is not equal in length to the other two sides.
7.
FLASHCARD QUESTION
Front
If the lengths of the equal sides of an isosceles triangle are 10 cm each and the base is 12 cm, what is the height of the triangle?
Back
Using the Pythagorean theorem, height = √(10² - (12/2)²) = √(100 - 36) = √64 = 8 cm.
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