CHAPTER 3 EXERCISES

Author:: Jorge Cássio

Topic:: Equilateral Triangles, Isosceles Triangles, Right Triangles, Scalene Triangles, Triangles

1- Is it possible to build a triangle using segments that measure 10 m, 5 m and 16 m? Justify your answer.

2 (UnB-adapted) - The AB segment of an ABC triangle is expressed by an integer. Giving that the segments AC and BC measure, respectively, 27 cm and 16 cm. What is the maximum length value for the segment AB? Justify your answer.

3-When it cames to triangles, check the following items that are true:

Select all that apply

A
(UnB) - Consider that, in an isosceles triangle of vertices A, B, and C, the angle Â has 10° more than twice the angle measurement, then the sum of the two possible measurements for Â is 169°.
B
(UnB)- A triangle is fully determined by knowing its three angles.
C
(UnB)- A triangle is fully determined, knowing its three sides.

Check my answer (3)

4-(Dolce & Pompeo) In the following items, mark the correct ones.

Select all that apply

A
Every isosceles triangle is equilateral.
B
Every equilateral triangle is isosceles.
C
A scalene triangle can be isosceles.
D
An isosceles triangle is an acute-angled triangle.
E
A right-angle triangle is a scalene triangle.
F
There is a right-angle triangle and an isosceles triangle.
G
There is an isosceles obtuse-angled triangle.
H
Every acute-angled triangle is either an isosceles or equilateral triangle.

Check my answer (3)

5 (Adapted Dolce & Pompeo) - If the triangle "ABC" has an isosceles base "BC", determine x, knowing that AB = 2x-7 and AC = x +5.

6 (Adapted Dolce & Pompeo) - If the triangle ABC has the segment BC - which is an isosceles base, determine x, knowing that

7 (Adapted Dolce & Pompeo) - In an isosceles triangle, the semiperimeter measure is 7.5m. Measure the sides of this triangle, knowing that the sum of the congruent sides is four times the measure of the base.

CHAPTER 3 EXERCISES

New Resources

Discover Resources

Discover Topics