Isosceles and Equilateral Triangles
Flashcard
•
Mathematics
•
9th - 10th Grade
•
Practice Problem
•
Hard
+4
Standards-aligned
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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, which also means that the angles opposite those sides are equal.
Tags
CCSS.4.G.A.2
2.
FLASHCARD QUESTION
Front
What is an equilateral triangle?
Back
An equilateral triangle is a triangle in which all three sides are of equal length, and all three angles are equal, each measuring 60°.
Tags
CCSS.4.G.A.2
3.
FLASHCARD QUESTION
Front
What is the sum of the interior angles of a triangle?
Back
The sum of the interior angles of a triangle is always 180°.
Tags
CCSS.8.G.A.5
4.
FLASHCARD QUESTION
Front
If two angles of a triangle are equal, what can be said about the sides opposite those angles?
Back
The sides opposite the equal angles are also equal in length.
Tags
CCSS.8.G.A.5
5.
FLASHCARD QUESTION
Front
What is the vertex angle in an isosceles triangle?
Back
The vertex angle in an isosceles triangle is the angle formed by the two equal sides.
Tags
CCSS.HSG.CO.C.11
6.
FLASHCARD QUESTION
Front
How do you find the measure of the vertex angle in an isosceles triangle if the base angles are known?
Back
The measure of the vertex angle can be found using the formula: Vertex Angle = 180° - 2(Base Angle).
Tags
CCSS.8.G.A.5
7.
FLASHCARD QUESTION
Front
What are remote interior angles in relation to exterior angles?
Back
Remote interior angles are the two interior angles of a triangle that are not adjacent to a given exterior angle.
Tags
CCSS.8.G.A.5
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