Math Vocabulary Flashcard

Front

An acute angle measures:

Back

less than 90 degrees.

Front

Perimeter measures:

Back

the outside of a figure.

Front

What types of lines are these?

Back

Perpendicular

Front

An obtuse angle measures:

Back

more than 90 degrees.

Front

Look at the angles in this triangle. Because it has two acute angles and one obtuse angle, this triangle is:

Back

obtuse.

Front

The colored lines are: acute, parallel, perpendicular

Back

parallel

Front

Classify a triangle with 3 equal sides by SIDES.

Back

equilateral triangle.

Front

A quadrilateral has ___ sides.

Back

4

Front

Which figure only has one pair of parallel sides? Options: trapezoid, parallelogram, square, rhombus

Back

trapezoid

Front

This shows what type of line? Options: line segment, ray, angle, point

Back

ray