Lines, angles, and triangles

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triangle similarity & congruency

Last updated 2:52 PM on 7/30/26
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5 Terms

1
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SSS

Side-Side-Side

if all sides are congruent, then both triangles are congruent

<p>Side-Side-Side</p><p>if all sides are congruent, then both triangles are congruent</p>
2
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SAS

Side-Angle-Side

when triangles have two congruent sides and a congruent angle in-between, the triangles are congruent

<p>Side-Angle-Side</p><p>when triangles have two congruent sides and a congruent angle in-between, the triangles are congruent</p>
3
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ASA

Angle-Side Angle

when triangles have two congruent angles and a congruent side in-between, the triangles are congruent

<p>Angle-Side Angle</p><p>when triangles have two congruent angles and a congruent side in-between, the triangles are congruent</p>
4
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AAS

Angle-Angle-Side

when triangles have two congruent angles and a congruent side that is not in-between, the triangles are congruent

5
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HL

Hypotenuse-Leg (Only for right triangles)

If the hypotenuse and leg of one triangle are congruent to the hypot. and leg of another triangle, the triangles are congruent

<p>Hypotenuse-Leg (Only for right triangles)</p><p>If the hypotenuse and leg of one triangle are congruent to the hypot. and leg of another triangle, the triangles are congruent</p>