Triangle Angles and Congruency Challenge

What is the measure of the third angle in a triangle if the other two angles are 45° and 55°?

• 90°

• 70°

• 80°

• 100°

Classify a triangle with angles measuring 60°, 60°, and 60°. What type of triangle is it?

• Isosceles triangle

• Scalene triangle

• Right triangle

• Equilateral triangle

According to the triangle sum theorem, what is the sum of the interior angles of a triangle?

• 360 degrees

• 120 degrees

• 180 degrees

• 90 degrees

If two angles of a triangle are 30° and 70°, what is the measure of the missing angle?

• 100°

• 80°

• 90°

• 60°

Identify the type of triangle with sides measuring 5 cm, 5 cm, and 8 cm.

• Right triangle

• Equilateral triangle

• Isosceles triangle

• Scalene triangle

Using the congruence criteria, if two triangles have two sides equal and the included angle equal, what can be said about the triangles?

• The triangles are similar.

• The triangles are congruent.

• The triangles are not related.

• The triangles have different angles.

In a right triangle, if one angle measures 30°, what is the measure of the other non-right angle?

• 60°

• 75°

• 90°

• 45°

If triangle ABC is congruent to triangle DEF, what can be said about their corresponding angles?

• The corresponding angles of triangle ABC and triangle DEF are complementary.

• The corresponding angles of triangle ABC and triangle DEF are supplementary.

• The corresponding angles of triangle ABC and triangle DEF are equal.

• The corresponding angles of triangle ABC and triangle DEF are different.

What type of triangle has one angle greater than 90°?

• Scalene triangle

• Acute triangle

• Right triangle

• Obtuse triangle

If the angles of a triangle are in the ratio 2:3:4, what are the measures of the angles?

• 40 degrees, 60 degrees, 80 degrees

• 20 degrees, 70 degrees, 90 degrees

• 45 degrees, 45 degrees, 90 degrees

• 30 degrees, 50 degrees, 100 degrees