Geometry Vocab

A triangle with all sides different lengths. 

• scalene

• isosceles

• acute

• equilateral

Two angles whose measures add up to 180.

• complementary

• supplementary

• perpendicular

• parallel

Two angles whose measures add up to 90. 

• complementary

• supplementary

• perpendicular

• straight

Two lines that intersect to form right triangles. 

• parallel

• perpendicular

• right

• skew

Congruent means...

• Same Shape Same Size

• Same Shape Different Size

• Different Shape Same Size

• Different Shape Different Size

Similarity means...

• Same Shape Same Size

• Same Shape Different Size

• Different Shape Different Size

• Different Shape Same Size

A pair of opposite congruent angles formed by intersecting lines.

• Linear Pair

• Adjacent Angles

• Corresponding Angles

• Vertical Angles

Classify using sides!

• Scalene

• Isosceles

• Equilateral

Has 2 pairs of parallel sides.

• Trapezoid

• Triangle

• Parallelogram

• Rhombus

Is a quadrilateral with only one pair of parallel sides.

• Rhombus

• Square

• Rectangle 

• Trapezoid