Geometry

Acute angles are ​ (a)   90 degrees.

• less than
• greater than
• exactly

Obtuse angles are ​ (a)   90 degrees.

• greater than
• less than
• exactly

Right angles are ​ (a)   90 degrees.

• exactly
• less than
• greater than

Straight angles have a measure of exactly ​ (a)  

• 180 degrees
• 45 degrees
• 360 degrees
• 90 degrees
• 75 degrees

What is the measure of this angle?

• 65

• 66

• 125

• 54

How many lines of symmetry does this shape have?

• 1
• 2
• 4
• 8

A ​ (a)   has four right angles and four ​ (b)   sides.

• square
• congruent
• opposite
• triangle
• long
• diagonal
• pentagon
• hexagon

• 35
• 135
• 45
• 50

Which polygon has four right angles?

• triangle

• trapezoid

• hexagon

• rectangle

Match the following

• right angle

• 
• straight angle

• 
• acute angle

• 
• obtuse angle

•