# Triangle - 5th grade (10y) - math problems

#### Number of problems found: 10

• Triangle
Determine if it is possible to construct a triangle with sides 28 31 34 by calculation.
• An equilateral triangle
The perimeter of an equilateral triangle is 33cm. How long is each side?
• It is rectangular?
Size of two of the angles in a triangle are: α=110°, β=40°. Is it a right triangle?
• Triangle
Prove whether you can construct a triangle ABC, if a=9 cm, b=6 cm, c=10 cm.
• Triangle ABC
In a triangle ABC side b measure 10 cm less than the side a and side b is half of the side c. Calculate the length of sides if the circumference of the triangle is 42 cm.
• Christmas napkins
The girls embroidered Christmas napkins. Each napkin had the shape of a triangle with sides of 5 dm, 60 cm, and 800 mm. How many cms did the girls sew if they made 15 napkins?
5 triangles + 1 square = how many sides in all
• Angle
Draw angle |∠ ABC| = 130° and built its axis. What angle is between axis angle and arm of angle?
• Hexagon
Draw a regular hexagon inscribed in a circle with radius r=8 cm. What is its perimeter?
• Triangles
Ivo wants to draw all the triangles whose two sides of which have a length of 4 cm and 9 cm, and the length of the third side is expressed in whole centimeters. How many triangles does he have?

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