Missing Angles in Congruent Triangles for 8th Grade

Triangle ABC is congruent to triangle DEF. If angle A measures 50 degrees, what is the measure of angle D?

• 70 degrees

• 30 degrees

• 90 degrees

• 50 degrees

In a park, two triangular flower beds are congruent. If one bed has angles measuring 40 degrees and 60 degrees, what are the measures of the angles in the other bed?

• 50 degrees, 60 degrees, 70 degrees

• 40 degrees, 60 degrees, 80 degrees

• 30 degrees, 60 degrees, 90 degrees

• 40 degrees, 50 degrees, 90 degrees

Two ladders form congruent triangles with the ground. If one ladder makes a 30-degree angle with the ground, what is the angle made by the other ladder?

• 90 degrees

• 45 degrees

• 30 degrees

• 60 degrees

A triangular roof has two congruent sides. If one angle measures 70 degrees, what is the measure of the third angle?

• 60 degrees

• 50 degrees

• 30 degrees

• 40 degrees

In a triangle, if angle X is 45 degrees and triangle XYZ is congruent to triangle ABC, what is the measure of angle A?

• 90 degrees

• 60 degrees

• 45 degrees

• 30 degrees

Two roads form congruent triangular intersections. If one intersection has an angle measuring 80 degrees, what is the corresponding angle in the other intersection?

• 60 degrees

• 90 degrees

• 80 degrees

• 100 degrees

A triangular piece of land has two sides that are equal in length. If one angle measures 55 degrees, what is the measure of the other angle?

• 50 degrees

• 75 degrees

• 62.5 degrees

• 70 degrees

In a construction project, two triangular supports are congruent. If one support has angles measuring 30 degrees and 60 degrees, what are the angles of the other support?

• 45 degrees, 45 degrees, 90 degrees

• 30 degrees, 60 degrees, 90 degrees

• 60 degrees, 60 degrees, 60 degrees

• 30 degrees, 45 degrees, 105 degrees

Triangle GHI is congruent to triangle JKL. If angle G measures 75 degrees, what is the measure of angle J?

• 90 degrees

• 60 degrees

• 75 degrees

• 45 degrees

Two triangular sails on a boat are congruent. If one sail has an angle measuring 45 degrees, what is the measure of the corresponding angle on the other sail?

• 60 degrees

• 30 degrees

• 90 degrees

• 45 degrees