Triangles Test [Fall 23/24]

Front

What is the measure of angle b in a triangle if the other angles are 64° and 80°?

Back

Angle b = 36° (Sum of angles in a triangle = 180°)

Front

Do the following side lengths form a triangle? 2 inches, 2 inches, 4 inches

Back

No (The sum of the lengths of any two sides must be greater than the length of the third side.)

Front

If ∆LMK ≅ ∆LMT, then what can we say about the angles?

Back

∠K ≅ ∠T (Corresponding angles in congruent triangles are equal.)

Front

An ISOSCELES triangle has _____________.

Back

2 equal sides (An isosceles triangle has at least two sides that are equal in length.)

Front

Identify the longest side in triangle ABC if AC = 5 cm, BA = 4 cm, BC = 3 cm.

Back

AC (The longest side is opposite the largest angle.)

Front

What is the sum of the interior angles of a triangle?

Back

180° (The sum of the angles in any triangle is always 180°.)

Front

What type of triangle has all sides of different lengths?

Back

Scalene triangle (A scalene triangle has no equal sides.)

Front

What is the Pythagorean theorem?

Back

a² + b² = c² (In a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides.)

Front

If a triangle has angles measuring 30° and 60°, what is the measure of the third angle?

Back

90° (The third angle can be found by subtracting the sum of the other two angles from 180°.)

Front

What is the definition of a right triangle?

Back

A triangle with one angle measuring 90°.