4.1 Congruent Triangles Flashcards Preview

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Flashcards in 4.1 Congruent Triangles Deck (15):
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Congruent Triangles

If triangle ABC is congruent to triangle PQR, then there is a correspondence between their angles and sides such that corresponding angles are congruent and corresponding sides are congruent

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Equilateral Triangle

An equilateral triangle has three congruent sides

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Isosceles Triangle

An isosceles triangle has at lease 2 congruent sides

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Scalene Triangle

A scalene triangle is a triangle that has no congruent sides

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Acute Triangle

An acute triangle has 3 acute angles

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Equiangular Triangle

An equiangular triangle has 3 congruent angles, each with a measure of 60 degrees

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Right Triangle

A right triangle is a triangle with exactly one right angle

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Obtuse Triangle

An obtuse triangle has exactly one obtuse angle

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Vertex

The vertex is the intersection point of the 2 sides of an angle

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Opposite Side

In triangle ABC, side BC is opposite angle A

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Adjacent Side

In a triangle or other polygon, 2 sides that share a common vertex are adjacent sides

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Legs of a Right Triangle

In a right angle, the sides adjacent to the right angle are the legs of the triangle

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Hypotenuse of a Right Triangle

In a right triangle, the side opposite the right angle is the hypotenuse of the triangle

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Legs of an Isosceles Triangle

In an isosceles triangle with exactly two congruent sides, the congruent sides are called the legs

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Base of an Isosceles Triangle

In an isosceles triangle with exactly 2 congruent sides, the non-congruent sides are called the base