Congruent Triangles

Front

Figures that have the same _____ and size are congruent triangles.

Back

shape

Front

Classify the triangle shown in the picture by its angles: Obtuse, Right, Acute, Equilateral.

Back

Acute

Front

Use the Exterior Angle Theorem to find the value of x: 117, 94, 149, 31.

Back

149

Front

Which statement indicates that the triangles in each pair are congruent: ∆LMK ≅ ∆LMT, ∆LMK ≅ ∆TMK, ∆LTKM ≅ ∆LMT, ∆TMK ≅ ∆TLK?

Back

∆LMK ≅ ∆LMT

Front

Choose a correct equation to find x: 4x - 2 + 12x + 1 = 75, 4x - 2 + 75 = 12x + 1, 4x - 2 + 75 + 12x + 1 = 180, 4x - 2 - 75.

Back

4x - 2 + 75 = 12x + 1

Front

What is the definition of congruent triangles?

Back

Triangles that have the same shape and size.

Front

What is the Angle-Angle (AA) criterion for triangle similarity?

Back

If two angles of one triangle are equal to two angles of another triangle, the triangles are similar.

Front

What is the Side-Side-Side (SSS) criterion for triangle congruence?

Back

If three sides of one triangle are equal to three sides of another triangle, the triangles are congruent.

Front

What is the Side-Angle-Side (SAS) criterion for triangle congruence?

Back

If two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle, the triangles are congruent.

Front

What is the definition of an exterior angle in a triangle?

Back

An exterior angle is formed by one side of the triangle and the extension of an adjacent side.