Question bank: Triangles: Sum of Angles

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Question 1:

Easy

Triangles: Sum of Angles

Question 2:

Very Hard

In a topography class, a student is calculating the internal angles of a triangular terrain to design a drainage project. He knows that two of the terrain's angles are 45 degrees and 75 degrees. However, he accidentally dropped one of his measuring instruments and cannot determine the third angle. Help the student determine the third angle of the terrain, knowing that the sum of the internal angles of a triangle is always 180 degrees.

Triangles: Sum of Angles

Contextualized Question

Calculus Question

Question 3:

Medium

In a geometry class, the teacher drew an isosceles triangle ABC, with AB = AC. He drew a line DE parallel to BC, intersecting AB at D and AC at E. If the angle BAC is 48º and the angle ADE is 62º, what is the measure of angle ABC in the triangle?

Triangles: Sum of Angles

Question 4:

Easy

João and Maria are studying triangles at school. The teacher taught that the sum of the internal angles in any triangle is always 180 degrees. João and Maria draw a triangle with angles of 30 degrees and 70 degrees. What is the third angle?

Triangles: Sum of Angles

Question 5:

Medium

In a classroom, the teacher draws a triangle on the board and asks the students to find the value of the third angle, given that the other two angles are 40º and 80º. What is the value of the third angle of the triangle?

Triangles: Sum of Angles

IARA TIP

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