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What is a polyhedron in which one face can be any polygon and the lateral faces are triangles that meet at a common vertex?
A pyramid has a polygonal base with all other sides being triangles. As the Egyptians famously demonstrated, a common pyramid has a square base with four triangles meeting at a vertex, but any polygon - regular or irregular - can be used as the base of such a polyhedron.
Are some isosceles triangles equilateral triangles?
All isosceles triangles are not equilateral triangles
How can you classify triangles by their angles?
Triangles may be right triangles equilateral triangles acute or obtuse triangles
Two right triangles that are not similar still may have one congruent acute angle in common?
Not so. The two acute angles of a right triangle must add up to 90 degrees.So if the triangles have one congruent acute angle in common, they must alsohave the other acute angle in common, and then they're similar.
What is Definition of a square pyramid?
A polyhedron of which one face is a square, and the other faces are triangles with a common vertex.
What are triangles that share a common angle?
Equilateral triangles
What do acute triangles and obtuse triangles have in common?
they are both angkes
What do equilateral triangles have in common with acute triangles?
Everything, since they are one.
What do the regular tetrahedron octahedron and icosahedron have in common?
Their faces are equilateral triangles.
What do equilateral triangles and acute triangles have in common?
All their angles are less than 90 degrees.
What is equilateral and isosceles have in common?
They are both triangles
What does a rectangle have in common with triangles?
they both have straight edges
What do right triangles have in common with dolls?
2+10000
Two different isosceles triangles with perimeter 4a plus b?
two isosceles triangles with common line
What is the most common shapes used in tall buildings?
triangles
Do triangles and rectangles have anything in common?
they both have straight edges
Polyhedron in which the lateral faces are triangles with a common vertex?
pyramid
